fix: add label overwrite for tiproxy component val compatibility and min ready sec

[xhebox]

What problem does this PR solve?

What is changed and how does it work?

Code changes

• Has Go code change
• Has CI related scripts change

Tests

• Unit test
• E2E test
• Manual test
• No code

Side effects

• Breaking backward compatibility
• Other side effects:

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release Notes

Please refer to Release Notes Language Style Guide before writing the release note.

[codecov-commenter]

Codecov Report

Merging #5194 (3c62e6b) into master (899409c) will decrease coverage by 0.04%.
Report is 2 commits behind head on master.
The diff coverage is 43.64%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5194      +/-   ##
==========================================
- Coverage   57.79%   57.76%   -0.04%     
==========================================
  Files         245      246       +1     
  Lines       29327    29476     +149     
==========================================
+ Hits        16951    17027      +76     
- Misses      10726    10794      +68     
- Partials     1650     1655       +5     

Flag	Coverage Δ
unittest	57.76% <43.64%> (-0.04%)	⬇️

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-08-02 13:11:40.926288016 +0000 UTC m=+277384.868636542: ☑️ agreed by csuzhangxc.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: csuzhangxc

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[xhebox]

/test pull-e2e-kind
/test pull-e2e-kind-basic
/test pull-e2e-kind-serial
/test pull-e2e-kind-br
/test pull-e2e-kind-across-kubernetes

[ti-chi-bot]

@xhebox: The label(s) /pull-e2e-kind, /pull-e2e-kind-basic, /pull-e2e-kind-serial, /pull-e2e-kind-br, /pull-e2e-kind-across-kubernetes cannot be applied, because the repository doesn't have them.

In response to this:

/test pull-e2e-kind
/test pull-e2e-kind-basic
/test pull-e2e-kind-serial
/test pull-e2e-kind-br
/test pull-e2e-kind-across-kubernetes

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