refactor: rename chunk_id->message_id

[guy-starkware]

This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 74.28%. Comparing base (6da0e49) to head (cf3f846).
Report is 89 commits behind head on main.

Files with missing lines	Patch %	Lines
...rates/papyrus_protobuf/src/converters/consensus.rs	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #909      +/-   ##
==========================================
- Coverage   76.01%   74.28%   -1.74%     
==========================================
  Files         359      357       -2     
  Lines       38301    36214    -2087     
  Branches    38301    36214    -2087     
==========================================
- Hits        29116    26902    -2214     
- Misses       6850     7175     +325     
+ Partials     2335     2137     -198     

Flag	Coverage Δ
	74.28% <50.00%> (?)

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[dan-starkware]

Reviewed 2 of 2 files at r1, 2 of 2 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @guy-starkware)