Print the transaction's chain ID in expert mode. (re-opened from #4332 after revert)

[tzemanovic]

Describe your changes

An attempt to address #4282 by displaying the chain ID of the transaction in expert mode. The chain ID is still not printed in normal mode because too much information is already being displayed there. See attached what the test vectors would look like after this change: testvecs-formatted.json.gz for the JSON output and testdbgs.txt.gz for the debug formatting.

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 74.18%. Comparing base (73bf957) to head (3907056).
Report is 83 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/sdk/src/signing.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4341      +/-   ##
==========================================
+ Coverage   74.15%   74.18%   +0.03%     
==========================================
  Files         345      345              
  Lines      110548   110633      +85     
==========================================
+ Hits        81975    82075     +100     
+ Misses      28573    28558      -15     

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