retry chunk pool exhaustion error in querier, not in query frontend #7797

Job	Run time
lint	3m 43s
build	5m 49s
test	29m 51s
integration-configs-db	2m 49s
integration (requires_docker)	6m 31s
integration (integration_alertmanager)	4m 39s
integration (integration_backward_compatibility)	11m 50s
integration (integration_memberlist)	8m 24s
integration (integration_querier)	15m 48s
integration (integration_ruler)	4m 55s
integration (integration_query_fuzz)	2m 39s
deploy_website	0s
deploy	0s
	1h 36m 58s

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