Fix flaky fuzz tests with count_values #10870

Job	Run time
test	13m 42s
test	15m 57s
lint	4m 28s
lint	4m 28s
CodeQL	6m 48s
CodeQL	6m 48s
build	4m 15s
build	4m 15s
test-no-race	7m 41s
test-no-race	7m 41s
integration-configs-db	3m 2s
integration-configs-db	3m 2s
integration (requires_docker)	7m 31s
integration (requires_docker)	7m 31s
integration (integration_alertmanager)	4m 4s
integration (integration_alertmanager)	4m 4s
integration (integration_backward_compatibility)	11m 0s
integration (integration_backward_compatibility)	11m 0s
integration (integration_memberlist)	7m 50s
integration (integration_memberlist)	7m 50s
integration (integration_querier)	15m 9s
integration (integration_querier)	15m 9s
integration (integration_ruler)	5m 53s
integration (integration_ruler)	5m 53s
integration (integration_query_fuzz)	4m 58s
integration (integration_query_fuzz)	4m 58s
deploy_website	0s
deploy_website	0s
deploy	0s
deploy	0s
	3h 14m 57s

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