statistics: add upper bound of retry for sync load

[hawkingrei]

What problem does this PR solve?

Issue Number: close #52657

Problem Summary:

What changed and how does it work?

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

[hawkingrei]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: winoros

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-29 06:00:16.936378549 +0000 UTC m=+1022812.070828670: ☑️ agreed by AilinKid.
• 2024-08-29 06:19:14.554600493 +0000 UTC m=+1023949.689050614: ☑️ agreed by winoros.

[codecov]

Codecov Report

Attention: Patch coverage is 87.09677% with 4 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-7.1-20240828-v7.1.5@8369cf5). Learn more about missing BASE report.

Additional details and impacted files

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