stats: use GetColOriginDefaultValue to get default value of a column (#60438)

[ti-chi-bot]

This is an automated cherry-pick of #60438

What problem does this PR solve?

Issue Number: close #60194

Problem Summary:

What changed and how does it work?

Fix the issue that the HandleDDLEvent cannot handle timezone issues properly.

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.

Documentation

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

Release note

None

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-8.5@e2696ed). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #60439   +/-   ##
================================================
  Coverage               ?   56.9611%           
================================================
  Files                  ?       1769           
  Lines                  ?     627951           
  Branches               ?          0           
================================================
  Hits                   ?     357688           
  Misses                 ?     246157           
  Partials               ?      24106           

Flag	Coverage Δ
integration	36.8223% <100.0000%> (?)
unit	72.6443% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.8711% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.2873% <0.0000%> (?)

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[0xPoe]

Thanks!

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Rustin170506, winoros

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Needs approval from an approver in each of these files:

• OWNERS [Rustin170506,winoros]
• pkg/statistics/OWNERS [Rustin170506,winoros]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-04-11 12:54:05.097928839 +0000 UTC m=+2433738.782164935: ☑️ agreed by Rustin170506.
• 2025-04-11 17:18:22.271187421 +0000 UTC m=+2449595.955423517: ☑️ agreed by winoros.

[winoros]

/unhold

[ti-chi-bot]

@winoros: You cannot manually add or delete the cherry pick approval state labels, only I and the tursted members have permission to do so. You can approve it in internal platform.

In response to adding label named cherry-pick-approved.

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[ti-chi-bot]

@winoros: You cannot manually add or delete the cherry pick approval state labels, only I and the tursted members have permission to do so. You can approve it in internal platform.

In response to adding label named cherry-pick-approved.

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 ti-community-infra/tichi repository.