Build the App with macOS 26.0 and Xcode 26.0

[freedomtan]

To build the app with Xcode 26.0 on macOS 26.0, we need

1. a custom-built bazel (as suggested / discussed in 6.5.0 wrapped_clang broken on macOS Tahoe 26.0 bazelbuild/bazel#27026)
2. fixing zlib and png as mentioned in [1]

One iPhone 17 Pro and iPhone 16 Pro, I got

iPhone 17 Pro	iPhone 16 Pro

[1] #989 (comment)

[anhappdev]

1. a custom-built bazel (as suggested / discussed in 6.5.0 wrapped_clang broken on macOS Tahoe 26.0 bazelbuild/bazel#27026)

The latest update of Bazel (https://github.com/bazelbuild/bazel/releases/tag/8.4.2) has fixed the issue with macOS Tahoe.

[anhappdev]

We currently use Bazel 6, but its end of support is December 2025. Therefore, we should switch to Bazel 8 now.