Track discard time of excess packets in sigverify (backport #22554)

[mergify]

This is an automatic backport of pull request #22554 done by Mergify.
Cherry-pick of e616a7e has failed:

On branch mergify/bp/v1.8/pr-22554
Your branch is up to date with 'origin/v1.8'.

You are currently cherry-picking commit e616a7ebf.
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Unmerged paths:
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	both modified:   core/src/sigverify_stage.rs

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[mergify]

automerge label removed due to a CI failure

[mergify]

automerge label removed due to a CI failure

[mergify]

automerge label removed due to a CI failure

[mergify]

automerge label removed due to a CI failure

[codecov]

Codecov Report

Merging #22569 (7d1e015) into v1.8 (b357eda) will decrease coverage by 0.0%.
The diff coverage is 100.0%.

@@            Coverage Diff            @@
##             v1.8   #22569     +/-   ##
=========================================
- Coverage    81.6%    81.6%   -0.1%     
=========================================
  Files         460      460             
  Lines      131394   131403      +9     
=========================================
- Hits       107261   107230     -31     
- Misses      24133    24173     +40     

[github-actions]

This PR has been automatically locked since there has not been any activity in past 14 days after it was merged.