dm: fix leader did not retire after delete the key

[GMHDBJD]

What problem does this PR solve?

Issue Number: close #11602

What is changed and how it works?

Check List

Tests

• Unit test

Questions

Will it cause performance regression or break compatibility?

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

Release note

Fix leader did not retire after delete the key

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.6171%. Comparing base (45c831a) to head (88d0d0c).
Report is 3 commits behind head on master.

Additional details and impacted files

Components	Coverage Δ
cdc	61.4435% <ø> (+0.2113%)	⬆️
dm	51.0846% <100.0000%> (+0.0512%)	⬆️
engine	63.4444% <ø> (+0.0494%)	⬆️

Flag	Coverage Δ
unit	57.6171% <100.0000%> (+0.1399%)	⬆️

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

@@               Coverage Diff                @@
##             master     #11604        +/-   ##
================================================
+ Coverage   57.4771%   57.6171%   +0.1399%     
================================================
  Files           851        851                
  Lines        126539     126872       +333     
================================================
+ Hits          72731      73100       +369     
+ Misses        48407      48373        -34     
+ Partials       5401       5399         -2     

[D3Hunter]

why change filemode?

[GMHDBJD]

Weird, I changed it back

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: D3Hunter, lance6716

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• dm/OWNERS [D3Hunter,lance6716]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-24 07:51:48.86383256 +0000 UTC m=+1552378.604256499: ☑️ agreed by lance6716.
• 2024-09-24 07:56:50.178334364 +0000 UTC m=+1552679.918758303: ☑️ agreed by D3Hunter.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #11625.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #11626.