planner: fix incompatible behaviors between prep and non-prep statements when converting date/time values (#42443)

[ti-chi-bot]

This is an automated cherry-pick of #42443

What problem does this PR solve?

Issue Number: close #42439

Problem Summary: planner: fix incompatible behaviors between prep and non-prep statements when converting date/time values

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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[YangKeao]

LGTM

[YangKeao]

/retest

[YangKeao]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qw4990, YangKeao

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• OWNERS [YangKeao,qw4990]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-09-06 03:52:46.507007636 +0000 UTC m=+2503931.056023607: ☑️ agreed by YangKeao.
• 2023-10-13 03:25:04.549012262 +0000 UTC m=+1368302.136122407: ☑️ agreed by qw4990.

[qw4990]

/retest-required

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@4350f8d). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

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