Improve logging for validator voting period

[brentstone]

Describe your changes

Closes #3474.

Also fixes the validator voting period, which was found to be slightly buggy. Fix a bug left over from #3691.

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

[codecov]

Codecov Report

Attention: Patch coverage is 95.40230% with 4 lines in your changes missing coverage. Please review.

Project coverage is 72.49%. Comparing base (6d1b9da) to head (0877ea8).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/governance/src/utils.rs	96.66%	2 Missing ⚠️
crates/governance/src/storage/proposal.rs	75.00%	1 Missing ⚠️
crates/sdk/src/rpc.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3728      +/-   ##
==========================================
+ Coverage   72.47%   72.49%   +0.02%     
==========================================
  Files         338      338              
  Lines      104130   104190      +60     
==========================================
+ Hits        75470    75536      +66     
+ Misses      28660    28654       -6     

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