consensus-logic: Remove redundant messaging

[bewakes]

Description

This PR removes the cycle between FCM worker and CSM worker by having CSM send NewState message to FCM via watch channel instead as ForkChoiceMessage::NewState via mpsc channel.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature/Enhancement (non-breaking change which adds functionality or enhances an existing one)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor
• New or updated tests

Checklist

• I have performed a self-review of my code.
• I have commented my code where necessary.
• I have updated the documentation if needed.
• My changes do not introduce new warnings.
• I have added tests that prove my changes are effective or that my feature works.
• New and existing tests pass with my changes.

Related Issues

[bewakes]

The conversation from #434 (comment) can be continued here.

[codecov]

Codecov Report

Attention: Patch coverage is 3.20000% with 121 lines in your changes missing coverage. Please review.

Project coverage is 57.00%. Comparing base (7bc96ed) to head (2721e56).

Files with missing lines	Patch %	Lines
crates/status/src/status_manager.rs	0.00%	60 Missing ⚠️
crates/consensus-logic/src/fork_choice_manager.rs	0.00%	33 Missing ⚠️
crates/consensus-logic/src/csm/worker.rs	0.00%	6 Missing ⚠️
crates/consensus-logic/src/unfinalized_tracker.rs	44.44%	5 Missing ⚠️
bin/strata-client/src/rpc_server.rs	0.00%	4 Missing ⚠️
crates/consensus-logic/src/sync_manager.rs	0.00%	4 Missing ⚠️
crates/consensus-logic/src/csm/ctl.rs	0.00%	3 Missing ⚠️
crates/state/src/client_state.rs	0.00%	3 Missing ⚠️
crates/bridge-relay/src/relayer.rs	0.00%	1 Missing ⚠️
crates/consensus-logic/src/csm/state_tracker.rs	0.00%	1 Missing ⚠️
... and 1 more

@@            Coverage Diff             @@
##             main     #457      +/-   ##
==========================================
- Coverage   57.01%   57.00%   -0.02%     
==========================================
  Files         252      252              
  Lines       27950    27963      +13     
==========================================
+ Hits        15937    15941       +4     
- Misses      12013    12022       +9     

Files with missing lines	Coverage Δ
crates/consensus-logic/src/csm/message.rs	0.00% <ø> (ø)
crates/sync/src/worker.rs	0.00% <ø> (ø)
crates/bridge-relay/src/relayer.rs	33.88% <0.00%> (ø)
crates/consensus-logic/src/csm/state_tracker.rs	46.03% <0.00%> (-0.37%)	⬇️
crates/consensus-logic/src/duty/worker.rs	0.00% <0.00%> (ø)
crates/consensus-logic/src/csm/ctl.rs	0.00% <0.00%> (ø)
crates/state/src/client_state.rs	50.98% <0.00%> (-1.02%)	⬇️
bin/strata-client/src/rpc_server.rs	0.00% <0.00%> (ø)
crates/consensus-logic/src/sync_manager.rs	0.00% <0.00%> (ø)
crates/consensus-logic/src/unfinalized_tracker.rs	91.76% <44.44%> (-1.06%)	⬇️
... and 3 more

... and 2 files with indirect coverage changes