Fix signer capitulation to account for timing out its local view

[jacinta-stacks]

Encountered this scenario in GSM testing:
All signers receive burn block N, but half see parent_tenure_last_block_height: S+1 and the rest see parent_tenure_last_block_height: S.

Neither side ever capitulated to the appropriate side because in this instance the signer was still signing (timed out and would sign blocks but never updated its view) so it didn't even attempt capitulation. If GSM activated, this would have stalled. In the stall case, it would at least ATTEMPT a capitulation, but it still not have capitulated because in the case where we have a <70% reaching agreement on a view AND no blocks signed (which was exactly this case. A 50% split)...it does not attempt a capitulation. I am wary to mess with the capitulation logic and think its safer to just issue an update if you time out your local view before then also checking for capitulation based on blocking minorities etc.

[codecov]

Codecov Report

❌ Patch coverage is 49.19065% with 565 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.25%. Comparing base (5ff2268) to head (18ef1e3).
⚠️ Report is 52 commits behind head on develop.

Files with missing lines	Patch %	Lines
...c/tests/signer/v0/capitulate_parent_tenure_view.rs	0.00%	411 Missing ⚠️
stacks-signer/src/tests/signer_state.rs	74.31%	140 Missing ⚠️
stacks-signer/src/v0/tests.rs	81.39%	8 Missing ⚠️
stacks-signer/src/v0/signer.rs	88.00%	3 Missing ⚠️
stacks-signer/src/v0/signer_state.rs	96.59%	3 Missing ⚠️

❌ Your project status has failed because the head coverage (74.25%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6851      +/-   ##
===========================================
- Coverage    74.66%   74.25%   -0.42%     
===========================================
  Files          594      595       +1     
  Lines       358773   359859    +1086     
===========================================
- Hits        267894   267227     -667     
- Misses       90879    92632    +1753     

Files with missing lines	Coverage Δ
stacks-node/src/tests/signer/v0/mod.rs	45.74% <ø> (+6.16%)	⬆️
stacks-signer/src/v0/signer.rs	80.38% <88.00%> (+2.67%)	⬆️
stacks-signer/src/v0/signer_state.rs	78.85% <96.59%> (+2.76%)	⬆️
stacks-signer/src/v0/tests.rs	81.33% <81.39%> (-8.39%)	⬇️
stacks-signer/src/tests/signer_state.rs	84.45% <74.31%> (+37.76%)	⬆️
...c/tests/signer/v0/capitulate_parent_tenure_view.rs	0.00% <0.00%> (ø)

... and 75 files with indirect coverage changes

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[brice-stacks]

looks good!