client/tso: add a TSO wait failed duration observer

[JmPotato]

What problem does this PR solve?

Issue Number: ref #8281.

What is changed and how does it work?

Add a TSO wait failed duration observer.

Check List

Tests

• Unit test
• Integration test

Release note

None.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.54%. Comparing base (60b960a) to head (4e8b4f5).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8763      +/-   ##
==========================================
+ Coverage   75.52%   75.54%   +0.01%     
==========================================
  Files         461      461              
  Lines       72273    72275       +2     
==========================================
+ Hits        54587    54601      +14     
+ Misses      14182    14177       -5     
+ Partials     3504     3497       -7     

Flag	Coverage Δ
unittests	75.54% <100.00%> (+0.01%)	⬆️

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nolouch, rleungx

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Needs approval from an approver in each of these files:

• OWNERS [nolouch,rleungx]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-04 03:55:55.710873482 +0000 UTC m=+840468.550029030: ☑️ agreed by rleungx.
• 2024-11-04 05:28:40.754938392 +0000 UTC m=+846033.594093935: ☑️ agreed by nolouch.