scheduler: add metrics when there is potential reverse

[lhy1024]

What problem does this PR solve?

Issue Number: Close #5570

What is changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Release note

None.

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[codecov]

Codecov Report

Attention: Patch coverage is 96.15385% with 2 lines in your changes missing coverage. Please review.

Project coverage is 69.98%. Comparing base (0402e15) to head (fd8e541).
Report is 13 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8741      +/-   ##
==========================================
- Coverage   70.10%   69.98%   -0.13%     
==========================================
  Files         517      518       +1     
  Lines       79983    80154     +171     
==========================================
+ Hits        56076    56099      +23     
- Misses      20339    20473     +134     
- Partials     3568     3582      +14     

Flag	Coverage Δ
unittests	69.98% <96.15%> (-0.13%)	⬇️

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[okJiang]

/retest