*: let TestEvictLeaderScheduler run in two modes

[rleungx]

What problem does this PR solve?

Issue Number: ref #8619

What is changed and how does it work?

Previously, removeStore only takes effect when StoreIDWithRanges has the value. This PR fixes it.

Check List

Tests

• Unit test

Release note

None.

[wuhuizuo]

/remove-label needs-cherry-pick-release-5.4

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.

Project coverage is 77.72%. Comparing base (ec59a71) to head (70171b6).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8663      +/-   ##
==========================================
+ Coverage   77.61%   77.72%   +0.10%     
==========================================
  Files         474      474              
  Lines       62115    62112       -3     
==========================================
+ Hits        48211    48275      +64     
+ Misses      10347    10295      -52     
+ Partials     3557     3542      -15     

Flag	Coverage Δ
unittests	77.72% <0.00%> (+0.10%)	⬆️

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[ti-chi-bot]

@rleungx: The following test 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-integration-realcluster-test	70171b6	link	false	/test pull-integration-realcluster-test

Full PR test history. Your PR dashboard.

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #8664.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #8665.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #8666.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #8667.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #8668.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-5.4: #8669.

[MimeLyc]

/remove-label needs-cherry-pick-release-5.4