codec: encode checksum for timestamp consider tz (#50896)

[ti-chi-bot]

This is an automated cherry-pick of #50896

What problem does this PR solve?

Issue Number: close #50851

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.

Fix row checksum calculation on the timestamp does not consider time zone cause the CDC failed to verify the checksum

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-02-02 10:21:22.465304612 +0000 UTC m=+1733724.029602316: ☑️ agreed by zyguan.
• 2024-02-02 10:41:49.561353783 +0000 UTC m=+1734951.125651489: ☑️ agreed by cfzjywxk.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cfzjywxk, tangenta, zyguan

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[3AceShowHand]

/retest

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.5@ecfef69). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

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Flag	Coverage Δ
unit	71.9817% <0.0000%> (?)

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