statstics: avoid unnecessary try when to sync load (#56614)

[ti-chi-bot]

This is an automated cherry-pick of #56614

What problem does this PR solve?

Issue Number: close #56472

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

e2e team has verified it by their e2e test cases/

• 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

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, winoros

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Needs approval from an approver in each of these files:

• OWNERS [hawkingrei,winoros]
• pkg/statistics/OWNERS [hawkingrei,winoros]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-14 10:20:47.09344392 +0000 UTC m=+266444.242353751: ☑️ agreed by hawkingrei.
• 2024-10-14 10:21:33.651122687 +0000 UTC m=+266490.800032520: ☑️ agreed by winoros.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-8.4@e316107). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.4     #56638   +/-   ##
================================================
  Coverage               ?   56.2484%           
================================================
  Files                  ?       1751           
  Lines                  ?     628057           
  Branches               ?          0           
================================================
  Hits                   ?     353272           
  Misses                 ?     250891           
  Partials               ?      23894           

Flag	Coverage Δ
integration	36.8109% <100.0000%> (?)
unit	72.5335% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9478% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.3967% <0.0000%> (?)

[hawkingrei]

/retest

[hawkingrei]

/retest