*: reset config if the input is invalid (#8632)

[ti-chi-bot]

This is an automated cherry-pick of #8632

What problem does this PR solve?

Issue Number: Close #8619.

What is changed and how does it work?

Check List

Tests

• Unit test

Release note

None.

[ti-chi-bot[bot]]

PR needs rebase.

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 63.15789% with 7 lines in your changes missing coverage. Please review.

Project coverage is 75.56%. Comparing base (959b578) to head (1a4fa89). Report is 6 commits behind head on release-6.5.

Files with missing lines	Patch %	Lines
server/schedulers/grant_leader.go	22.22%	6 Missing and 1 partial :warning:

Additional details and impacted files

@@               Coverage Diff               @@
##           release-6.5    #8661      +/-   ##
===============================================
- Coverage        75.64%   75.56%   -0.08%     
===============================================
  Files              332      332              
  Lines            33855    33869      +14     
===============================================
- Hits             25608    25592      -16     
- Misses            6049     6068      +19     
- Partials          2198     2209      +11     

Flag	Coverage Δ
unittests	75.56% <63.15%> (-0.08%)	:arrow_down:

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-09-25 05:57:56.855760773 +0000 UTC m=+1631946.596184706: :ballot_box_with_check: agreed by lhy1024.
• 2025-02-05 04:02:46.945944073 +0000 UTC m=+244438.478356071: :ballot_box_with_check: agreed by bufferflies.

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bufferflies, lhy1024, niubell

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• ~~OWNERS~~ [bufferflies,lhy1024]
• ~~pkg/schedule/schedulers/OWNERS~~ [niubell]

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