Conda package registry invalid when package's dependency is empty

### Description

For uploading a conda package with 0 dependency, the conda client will report an error on later `conda search`. For example:

```
Loading channels: failed

# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

    Traceback (most recent call last):
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/exception_handler.py", line 28, in __call__
        return func(*args, **kwargs)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/cli/main.py", line 61, in main_subshell
        exit_code = do_call(args, parser)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/cli/conda_argparse.py", line 205, in do_call
        result = getattr(module, func_name)(args, parser)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/cli/main_search.py", line 237, in execute
        SubdirData.query_all(spec, channel_urls, subdirs),
        ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/core/subdir_data.py", line 207, in query_all
        result = tuple(
            chain.from_iterable(executor.map(subdir_query, channel_urls))
        )
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/concurrent/futures/_base.py", line 619, in result_iterator
        yield _result_or_cancel(fs.pop())
              ~~~~~~~~~~~~~~~~~^^^^^^^^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/concurrent/futures/_base.py", line 317, in _result_or_cancel
        return fut.result(timeout)
               ~~~~~~~~~~^^^^^^^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/concurrent/futures/_base.py", line 456, in result
        return self.__get_result()
               ~~~~~~~~~~~~~~~~~^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/concurrent/futures/_base.py", line 401, in __get_result
        raise self._exception
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/concurrent/futures/thread.py", line 59, in run
        result = self.fn(*self.args, **self.kwargs)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/core/subdir_data.py", line 192, in subdir_query
        return tuple(
            SubdirData(Channel(url), repodata_fn=repodata_fn).query(
                package_ref_or_match_spec
            )
        )
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/core/subdir_data.py", line 229, in query
        for prec in self._iter_records_by_name(package_name):
                    ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/core/subdir_data.py", line 423, in _iter_records_by_name
        yield self._package_records[i]
              ~~~~~~~~~~~~~~~~~~~~~^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/core/subdir_data.py", line 111, in __getitem__
        record = PackageRecord(**record)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/auxlib/entity.py", line 754, in __call__
        instance = super().__call__(*args, **kwargs)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/models/records.py", line 499, in __init__
        super().__init__(*args, **kwargs)
        ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/auxlib/entity.py", line 770, in __init__
        setattr(self, key, kwargs[key])
        ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/auxlib/entity.py", line 437, in __set__
        instance.__dict__[self.name] = self.validate(
                                       ~~~~~~~~~~~~~^
            instance,
            ^^^^^^^^^
            self.box(instance, instance.__class__, val),
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        )
        ^
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/auxlib/entity.py", line 625, in validate
        val = super().validate(instance, val)
      File "/opt/homebrew/Caskroom/miniconda/base/lib/python3.13/site-packages/conda/auxlib/entity.py", line 482, in validate
        raise ValidationError(getattr(self, 'name', 'undefined name'), val)
    conda.auxlib.exceptions.ValidationError: Value for depends cannot be None.

`$ /opt/homebrew/Caskroom/miniconda/base/bin/conda search none -c http://10.10.10.15:3000/api/packages/leo/conda`

  environment variables:
                 CIO_TEST=<not set>
    CONDA_ALLOW_SOFTLINKS=false
        CONDA_DEFAULT_ENV=base
                CONDA_EXE=/opt/homebrew/Caskroom/miniconda/base/bin/conda
             CONDA_PREFIX=/opt/homebrew/Caskroom/miniconda/base
    CONDA_PROMPT_MODIFIER=(base)
         CONDA_PYTHON_EXE=/opt/homebrew/Caskroom/miniconda/base/bin/python
               CONDA_ROOT=/opt/homebrew/Caskroom/miniconda/base
              CONDA_SHLVL=1
           CURL_CA_BUNDLE=<not set>
                 INFOPATH=/opt/homebrew/share/info:
               LD_PRELOAD=<not set>
                     PATH=/opt/homebrew/Caskroom/miniconda/base/bin:/opt/homebrew/Caskroom/minic
                          onda/base/condabin:/opt/homebrew/opt/sphinx-doc/bin:/Users/luohao/bin:
                          /Users/luohao/projects/llvm-10-
                          install/bin:/opt/homebrew/opt/llvm@11/bin:/opt/homebrew/opt/bison/bin:
                          /opt/homebrew/opt/sphinx-doc/bin:/opt/homebrew/opt/llvm/bin:/Users/luo
                          hao/Library/Python/3.9/bin:/opt/homebrew/bin:/usr/local/opt/node@12/bi
                          n:/usr/local/opt/make/libexec/gnubin:/opt/homebrew/bin:/opt/homebrew/s
                          bin:/Users/luohao/.cargo/bin:/usr/local/bin:/System/Cryptexes/App/usr/
                          bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd
                          /codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryp
                          texd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.crypte
                          xd/codex.system/bootstrap/usr/appleinternal/bin:/opt/X11/bin:/Library/
                          Apple/usr/bin:/Library/TeX/texbin:/Applications/iTerm.app/Contents/Res
                          ources/utilities:/Users/luohao/.orbstack/bin:/Applications/极空间.app/Con
                          tents/Resources/app.asar.unpacked/bin/platform-tools
       REQUESTS_CA_BUNDLE=<not set>
       SCRCPY_SERVER_PATH=/Applications/极空间.app/Contents/Resources/app.asar.unpacked/bin/platfor
                          m-tools/scrcpy-server
            SSL_CERT_FILE=<not set>

     active environment : base
    active env location : /opt/homebrew/Caskroom/miniconda/base
            shell level : 1
       user config file : /Users/luohao/.condarc
 populated config files : /opt/homebrew/Caskroom/miniconda/base/.condarc
                          /Users/luohao/.condarc
          conda version : 25.9.1
    conda-build version : 25.9.0
         python version : 3.13.9.final.0
                 solver : libmamba (default)
       virtual packages : __archspec=1=m1
                          __conda=25.9.1=0
                          __osx=26.0.1=0
                          __unix=0=0
       base environment : /opt/homebrew/Caskroom/miniconda/base  (writable)
      conda av data dir : /opt/homebrew/Caskroom/miniconda/base/etc/conda
  conda av metadata url : None
           channel URLs : http://10.10.10.15:3000/api/packages/leo/conda/osx-arm64
                          http://10.10.10.15:3000/api/packages/leo/conda/noarch
                          https://conda.anaconda.org/conda-forge/osx-arm64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/osx-arm64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/osx-arm64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /opt/homebrew/Caskroom/miniconda/base/pkgs
                          /Users/luohao/.conda/pkgs
       envs directories : /opt/homebrew/Caskroom/miniconda/base/envs
                          /Users/luohao/.conda/envs
               platform : osx-arm64
             user-agent : conda/25.9.1 requests/2.32.5 CPython/3.13.9 Darwin/25.0.0 OSX/26.0.1 solver/libmamba conda-libmamba-solver/25.4.0 libmambapy/2.3.2 aau/0.7.3 c/. s/. e/.
                UID:GID : 501:20
             netrc file : None
           offline mode : False


An unexpected error has occurred. Conda has prepared the above report.
If you suspect this error is being caused by a malfunctioning plugin,
consider using the --no-plugins option to turn off plugins.

Example: conda --no-plugins install <package>

Alternatively, you can set the CONDA_NO_PLUGINS environment variable on
the command line to run the command without plugins enabled.

Example: CONDA_NO_PLUGINS=true conda install <package>

If submitted, this report will be used by core maintainers to improve
future releases of conda.
Would you like conda to send this report to the core maintainers? [y/N]:

No report sent. To permanently opt-out, use

    $ conda config --set report_errors false

```

A valid `repodata.json` for this package should be:
```json
{"info":{"subdir":"noarch"},"packages":{},"packages.conda":{"none-15.2.0-1.conda":{"build":"1","build_number":1,"depends":[],"license":"GPL-3.0-only WITH GCC-exception-3.1","license_family":"GPL","md5":"a01910513678232b1bc4af53318c76c5","name":"none","sha256":"12c627677e089bddc5f710414f39c0f0fb14f59dfb9ed532bf61090ce96b3cc4","size":3658,"subdir":"osx-arm64","timestamp":1762519733030,"version":"15.2.0"}},"removed":[],"repodata_version":1}
```

### Gitea Version

1.24.6

### Can you reproduce the bug on the Gitea demo site?

Yes

### Log Gist

_No response_

### Screenshots

_No response_

### Git Version

_No response_

### Operating System

_No response_

### How are you running Gitea?

Via docker

### Database

MySQL/MariaDB

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Conda package registry invalid when package's dependency is empty #35895

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Uh oh!

Conda package registry invalid when package's dependency is empty #35895

Description

Description

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Can you reproduce the bug on the Gitea demo site?

Log Gist

Screenshots

Git Version

Operating System

How are you running Gitea?

Database

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