advancer: fix the incorrect gc safepoint behaviours (#52835)

[ti-chi-bot]

This is an automated cherry-pick of #52835

What problem does this PR solve?

Issue Number: ref #52082

Problem Summary:

1. Advancer didn't handle GC response correct, if set the safepoint smaller(Normally it won't happen, because the ts from advancer always closed to the current time(RPO <= 5min)) than current service safepoint, it still get the response without error.
2. Set service safepoint to 0 won't delete the value.

What changed and how does it work?

1. handle the response with smaller ts request.
2. add new interface to remove service safepoint.

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 the issue that del task won't clean up service safepoint.

[ti-chi-bot]

@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
idc-jenkins-ci-tidb/build	77d61ce	link	true	/test build
idc-jenkins-ci-tidb/unit-test	77d61ce	link	true	/test unit-test
idc-jenkins-ci-tidb/check_dev	77d61ce	link	true	/test check-dev

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: YuJuncen

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-17 08:16:37.229999909 +0000 UTC m=+518194.378909743: ☑️ agreed by YuJuncen.