operator: fix bug for using AddOpInfluence (#5312)

[ti-chi-bot]

This is an automated cherry-pick of #5312

What problem does this PR solve?

Issue Number: Close #5311

Tests

• Unit test

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lhy1024
• nolouch

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[bufferflies]

plz @CabinfeverB ，fix the conflict.

[nolouch]

some conflicts.

[nolouch]

/merge

[ti-chi-bot]

@nolouch: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 3fa455d

[codecov]

Codecov Report

Merging #5350 (3fa455d) into release-6.1 (d32cfb9) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           release-6.1    #5350      +/-   ##
===============================================
+ Coverage        75.52%   75.58%   +0.05%     
===============================================
  Files              307      307              
  Lines            30357    30356       -1     
===============================================
+ Hits             22928    22944      +16     
+ Misses            5443     5427      -16     
+ Partials          1986     1985       -1     

Flag	Coverage Δ
unittests	75.58% <100.00%> (+0.05%)	⬆️

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

Impacted Files	Coverage Δ
server/schedule/operator_controller.go	85.74% <100.00%> (+1.17%)	⬆️
pkg/tempurl/tempurl.go	45.00% <0.00%> (-15.00%)	⬇️
server/tso/local_allocator.go	64.86% <0.00%> (-13.52%)	⬇️
server/id/id.go	76.19% <0.00%> (-4.77%)	⬇️
server/schedule/labeler/labeler.go	76.77% <0.00%> (-1.30%)	⬇️
tools/pd-ctl/pdctl/command/operator.go	66.66% <0.00%> (-1.15%)	⬇️
server/cluster/coordinator.go	70.63% <0.00%> (-0.83%)	⬇️
server/cluster/cluster.go	83.04% <0.00%> (-0.65%)	⬇️
server/cluster/unsafe_recovery_controller.go	80.54% <0.00%> (-0.37%)	⬇️
server/schedule/operator/step.go	74.74% <0.00%> (-0.34%)	⬇️
... and 14 more

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