[Flaky Test] Fix unit test MasterServiceTests.testClusterStateUpdateLoggingWithDebugEnabled

[sumitasr]

Describe the bug

Reported in #15053 (comment)
#14464 (comment)

Related component

Cluster Manager

To Reproduce

Run unit test locally for 5000 iterations

Expected behavior

N/A

Additional Details

No response

[sumitasr]

Looking into it

[dblock]

@sumitasr any of the linked PRs fixed this? Close?

[dblock]

[Catch All Triage - 1, 2, 3, 4, 5]