sink(ticdc): Revert changes related to the conflict detector (#10897)

[ti-chi-bot]

This is an automated cherry-pick of #10897

What problem does this PR solve?

Issue Number: ref #10896

What is changed and how it works?

Check List

Tests

• No code

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

None

[ti-chi-bot]

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[codecov]

Codecov Report

Attention: Patch coverage is 88.65979% with 11 lines in your changes are missing coverage. Please review.

❗ No coverage uploaded for pull request base (release-8.1@5e1b22e). Click here to learn what that means.

Additional details and impacted files

Components	Coverage Δ
cdc	61.7379% <0.0000%> (?)
dm	51.2697% <0.0000%> (?)
engine	63.3526% <0.0000%> (?)

Flag	Coverage Δ
unit	57.4262% <88.6597%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

@@               Coverage Diff                @@
##             release-8.1     #10986   +/-   ##
================================================
  Coverage               ?   57.4262%           
================================================
  Files                  ?        849           
  Lines                  ?     125070           
  Branches               ?          0           
================================================
  Hits                   ?      71823           
  Misses                 ?      47855           
  Partials               ?       5392           

[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
pull-dm-integration-test	d45047c	link	true	/test dm-integration-test
pull-cdc-integration-kafka-test	d45047c	link	true	/test cdc-integration-kafka-test

Full PR test history. Your PR dashboard.

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[CharlesCheung96]

Batch cherry-pick in #10958