Release 8.5 20260225 v8.5.2

[ClamChowderTiDB]

What problem does this PR solve?

Issue Number: Release 8.5 20260225 v8.5.2

What is changed and how does it work?

Release 8.5 20260225 v8.5.2

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has the configuration change
• Has HTTP APIs changed (Don't forget to add the declarative for the new API)
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:
• PR to update pingcap/tiup:
• Need to cherry-pick to the release branch

Release note

None.

[ti-chi-bot]

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[ClamChowderTiDB]

/retest

[codecov]

Codecov Report

❌ Patch coverage is 85.49784% with 67 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.72%. Comparing base (4cd009c) to head (3ddbb7e).

Additional details and impacted files

@@                       Coverage Diff                       @@
##           release-8.5-20260225-v8.5.2   #10500      +/-   ##
===============================================================
+ Coverage                        75.62%   77.72%   +2.09%     
===============================================================
  Files                              463      469       +6     
  Lines                            72470    61482   -10988     
===============================================================
- Hits                             54806    47786    -7020     
+ Misses                           14166    10165    -4001     
- Partials                          3498     3531      +33     

Flag	Coverage Δ
unittests	77.72% <85.49%> (+2.09%)	⬆️

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