pkg: support the TSO format for asof expression (#48371)

[ti-chi-bot]

This is an automated cherry-pick of #48371

What problem does this PR solve?

Issue Number: close #48372

Problem Summary:

What is changed and how it works?

This PR provides the support to use TSO for asof expression of flashback sql command, stale read and resource calibration.

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.

Besides the timestamp format, TiDB users can use the TSO directly for `flashback` sql command, stale read and resource calibration.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, Defined2014

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-08 06:13:25.824721829 +0000 UTC m=+3624803.411831972: ☑️ agreed by BornChanger.
• 2023-11-08 06:17:12.624654331 +0000 UTC m=+3625030.211764476: ☑️ agreed by Defined2014.

[BornChanger]

/retest

[ti-chi-bot]

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

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