domain: avoid panic in the init stats breaking the loadStatsWorker

[hawkingrei]

What problem does this PR solve?

Issue Number: close #51581

Problem Summary:

What changed and how does it work?

If init-stats panics, then the load stats of this instance will all be broken.

Check List

Tests

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

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

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

None

[codecov]

Codecov Report

Merging #51579 (1759b7a) into master (f94a6ba) will increase coverage by 2.1003%.
Report is 1 commits behind head on master.
The diff coverage is 0.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #51579        +/-   ##
================================================
+ Coverage   70.7853%   72.8856%   +2.1003%     
================================================
  Files          1467       1467                
  Lines        436397     436418        +21     
================================================
+ Hits         308905     318086      +9181     
+ Misses       108156      98376      -9780     
- Partials      19336      19956       +620     

Flag	Coverage Δ
integration	48.8362% <0.0000%> (?)

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	51.4629% <ø> (+5.5714%)	⬆️

[elsa0520]

LGTM

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-03-07 06:34:22.281691666 +0000 UTC m=+321689.303938055: ☑️ agreed by AilinKid.
• 2024-03-07 07:07:23.399735506 +0000 UTC m=+323670.421981894: ☑️ agreed by elsa0520.

[hawkingrei]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, elsa0520, zimulala

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• pkg/domain/OWNERS [zimulala]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #51754.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #51755.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #51756.