fix lpad/rpad trailing zero miss (#9610)

[ti-chi-bot]

This is an automated cherry-pick of #9610

What problem does this PR solve?

Issue Number: close #9465

Problem Summary:

What is changed and how it works?

Check List

Tests

• [ ] Unit test
• [ ] Integration test
• [ ] Manual test (add detailed scripts or steps below)
• [ ] No code

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

fix lpad/rpad trailing zero miss

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: guo-shaoge, windtalker

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-11-19 05:12:55.491028637 +0000 UTC m=+937937.681897619: :ballot_box_with_check: agreed by windtalker.
• 2024-11-20 06:16:37.543097147 +0000 UTC m=+12385.162751660: :ballot_box_with_check: agreed by guo-shaoge.

[ti-chi-bot[bot]]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

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/run-all-tests

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[JaySon-Huang]

/test pull-integration-test

[ti-chi-bot[bot]]

@ti-chi-bot: 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
pull-integration-test	4d1cc4d3fa0f05e839af994edaad92a61aec18bf	link	true	/test pull-integration-test

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