metrics: add circuit breaker metrics

[rleungx]

What problem does this PR solve?

Issue Number: ref #58780

Problem Summary:

What changed and how does it work?

Check List

Tests

• Manual test (add detailed scripts or steps below)

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.8034%. Comparing base (397b0f2) to head (f60ba0a).
Report is 35 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #59338        +/-   ##
================================================
+ Coverage   73.0599%   73.8034%   +0.7435%     
================================================
  Files          1690       1697         +7     
  Lines        467367     476696      +9329     
================================================
+ Hits         341458     351818     +10360     
+ Misses       104902     103938       -964     
+ Partials      21007      20940        -67     

Flag	Coverage Δ
integration	43.5320% <ø> (?)
unit	72.8546% <ø> (+0.6179%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	43.8978% <ø> (-1.8881%)	⬇️

[rleungx]

/cc @nolouch @lcwangchao @Tema

[ti-chi-bot]

@rleungx: GitHub didn't allow me to request PR reviews from the following users: Tema.

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[rleungx]

/retest

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nolouch, tangenta, Tema

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Needs approval from an approver in each of these files:

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-14 07:01:59.211572666 +0000 UTC m=+599161.607794727: ☑️ agreed by nolouch.
• 2025-02-18 06:34:55.398260978 +0000 UTC m=+943137.794483040: ☑️ agreed by tangenta.

[rleungx]

/retest

[rleungx]

/retest