fix query priority throws 5xx when 4xx (#5704) #8187

Job	Run time
build	3m 42s
build	3m 42s
lint	15m 44s
lint	15m 44s
test	18m 1s
test	17m 50s
integration-configs-db	1m 53s
integration-configs-db	1m 53s
integration (requires_docker)	5m 1s
integration (requires_docker)	5m 1s
integration (integration_alertmanager)	3m 45s
integration (integration_alertmanager)	3m 45s
integration (integration_backward_compatibility)	11m 40s
integration (integration_backward_compatibility)	11m 40s
integration (integration_memberlist)	7m 9s
integration (integration_memberlist)	7m 9s
integration (integration_querier)	12m 51s
integration (integration_querier)	12m 51s
integration (integration_ruler)	3m 37s
integration (integration_ruler)	3m 37s
integration (integration_query_fuzz)	1m 52s
integration (integration_query_fuzz)	1m 52s
deploy_website	0s
deploy_website	1m 27s
deploy	0s
deploy	3m 3s
	2h 54m 49s

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