statistics: fix flaky test TestSyncLoadOnObjectWhichCanNotFoundInStorage

[hawkingrei]

What problem does this PR solve?

Issue Number: close #58162

Problem Summary:

What changed and how does it work?

sync load is running on the background. so we need to create the checkpoint which wait for the sync load's completing working. then we can check the result.

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

All modified and coverable lines are covered by tests ✅

Project coverage is 73.8534%. Comparing base (2a1f646) to head (cf13c82).
Report is 3 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58164        +/-   ##
================================================
+ Coverage   73.2116%   73.8534%   +0.6418%     
================================================
  Files          1675       1705        +30     
  Lines        461921     470074      +8153     
================================================
+ Hits         338180     347166      +8986     
+ Misses       102981     101471      -1510     
- Partials      20760      21437       +677     

Flag	Coverage Δ
integration	45.9662% <ø> (?)
unit	72.3238% <ø> (-0.0211%)	⬇️

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

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	45.9998% <ø> (+0.0060%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, lance6716

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• pkg/statistics/OWNERS [AilinKid]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-11 07:30:53.652392497 +0000 UTC m=+423643.741195039: ☑️ agreed by AilinKid.
• 2024-12-11 07:53:44.413170276 +0000 UTC m=+425014.501972816: ☑️ agreed by lance6716.

[hawkingrei]

/retest

[tiprow]

@hawkingrei: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
fast_test_tiprow	cf13c82	link	true	/test fast_test_tiprow

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.