autoid_service: add some debug log for rebase related operation (#46526)

[ti-chi-bot]

This is an automated cherry-pick of #46526

What problem does this PR solve?

Issue Number: ref #46444

Problem Summary:

What is changed and how it works?

Add some debug log for rebase operation, so it's easier for us to know what happen when we see 'duplicate entry' error

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code
  No logic change, just log.

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.

To merge this cherry pick, it must first be approved by the collaborators.

AFTER it has been approved by collaborators, please ping the release team in a comment to request a cherry pick review.

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[tiancaiamao]

/test unit-test

[tiprow]

@tiancaiamao: No presubmit jobs available for pingcap/tidb@release-6.5

In response to this:

/test unit-test

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@d7ce2f2). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-6.5     #46531   +/-   ##
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  Coverage               ?   74.0497%           
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  Files                  ?       1087           
  Lines                  ?     352813           
  Branches               ?          0           
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  Hits                   ?     261257           
  Misses                 ?      75042           
  Partials               ?      16514           

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: djshow832, YangKeao

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [YangKeao,djshow832]

Approvers can indicate their approval by writing /approve in a comment
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-27 01:52:21.055344673 +0000 UTC m=+801169.720570853: ☑️ agreed by djshow832.
• 2023-11-27 02:17:48.193073249 +0000 UTC m=+802696.858299444: ☑️ agreed by YangKeao.

[djshow832]

/retest