fix(p2p): request the proposal for an explicit block and round

[oXtxNt9U]

Summary

• GetProposal requests now carry a mandatory (blockNumber, round) query pinned from the job, so the responder serves exactly the requested round or nothing
• removes the timing race where the responder answered from the requester's live headers (re-snapshotted at send time) and an honest reply for a moved round got the peer banned

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

❌ Patch coverage is 12.05674% with 124 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.18%. Comparing base (b65766f) to head (8e735c3).

Files with missing lines	Patch %	Lines
...es/p2p/source/socket-server/codecs/proto/protos.js	11.51%	123 Missing ⚠️
packages/p2p/source/peer-communicator.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                       Coverage Diff                       @@
##           feat/p2p/get-messages-round    #1445      +/-   ##
===============================================================
- Coverage                        77.70%   77.18%   -0.52%     
===============================================================
  Files                              963      963              
  Lines                            17002    17141     +139     
  Branches                          2461     2462       +1     
===============================================================
+ Hits                             13211    13231      +20     
- Misses                            3784     3903     +119     
  Partials                             7        7              

Flag	Coverage Δ
contracts	91.76% <ø> (ø)
packages	76.80% <12.05%> (-0.53%)	⬇️

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