[CHIA-3687] Port create_signed_transaction to @marshal

[Quexington]

Another PR following #18593

[github-actions]

This PR has been flagged as stale due to no activity for over 60 days. It will not be automatically closed, but it has been given a stale-pr label and should be manually reviewed by the relevant parties.

[github-actions]

File	Coverage	Missing Lines
chia/wallet/wallet_request_types.py	97.2%	lines 1918

Total	Missing	Coverage
61 lines	Unknown	98%

[coveralls-official]

Pull Request Test Coverage Report for Build 19713408399

Details

• 60 of 61 (98.36%) changed or added relevant lines in 4 files are covered.
• 9 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+0.006%) to 90.764%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
chia/wallet/wallet_request_types.py	35	36	97.22%

Files with Coverage Reduction	New Missed Lines	%
chia/wallet/wallet_rpc_api.py	1	91.89%
chia/wallet/wallet_node.py	3	86.47%
chia/server/node_discovery.py	5	81.4%

Totals
Change from base Build 19682443433:	0.006%
Covered Lines:	102513
Relevant Lines:	112773

---

💛 - Coveralls

[richardkiss]

Seems fine.