retry chunk pool exhaustion error in querier, not in query frontend #7777

Job	Run time
lint	3m 42s
test	30m 1s
build	5m 38s
integration (requires_docker)	6m 9s
integration-configs-db	2m 51s
integration (integration_alertmanager)	4m 41s
integration (integration_backward_compatibility)	11m 50s
integration (integration_memberlist)	9m 9s
integration (integration_querier)	16m 14s
integration (integration_ruler)	5m 11s
integration (integration_query_fuzz)	2m 54s
deploy	0s
deploy_website	0s
	1h 38m 20s

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