[release-3.7] Fix unsynchronized range over leaseCache.entries

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #22129

/assign ahrtr

[kubernetes-prow]

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[ahrtr]

/ok-to-test

[kubernetes-prow]

@k8s-infra-cherrypick-robot: 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-etcd-e2e-arm64	2f5200d	link	true	/test pull-etcd-e2e-arm64
pull-etcd-coverage-report	2f5200d	link	true	/test pull-etcd-coverage-report

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.69%. Comparing base (7a4b47b) to head (2f5200d).

Additional details and impacted files

see 17 files with indirect coverage changes

@@               Coverage Diff               @@
##           release-3.7   #22149      +/-   ##
===============================================
+ Coverage        69.67%   69.69%   +0.02%     
===============================================
  Files              449      449              
  Lines            38186    38182       -4     
===============================================
+ Hits             26606    26611       +5     
+ Misses           10148    10140       -8     
+ Partials          1432     1431       -1     

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[kubernetes-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, k8s-infra-cherrypick-robot

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