fix: de-flake LatestDistinctIT.java #7324

Job	Run time
sample_operators_tests (sample-operators/tomcat-operator)	4m 7s
sample_operators_tests (sample-operators/mysql-schema)	3m 56s
sample_operators_tests (sample-operators/webpage)	3m 48s
sample_operators_tests (sample-operators/leader-election)	4m 40s
sample_operators_tests (sample-operators/operations)	9m 43s
	26m 14s

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