Add # of series in query response to query stat log #10722

Job	Run time
CodeQL	6m 58s
CodeQL	6m 58s
test	15m 42s
test	15m 48s
lint	4m 21s
lint	4m 21s
build	4m 6s
build	4m 6s
test-no-race	7m 12s
test-no-race	7m 12s
integration-configs-db	3m 2s
integration-configs-db	3m 2s
integration (requires_docker)	7m 12s
integration (requires_docker)	7m 12s
integration (integration_alertmanager)	4m 6s
integration (integration_alertmanager)	4m 6s
integration (integration_backward_compatibility)	10m 48s
integration (integration_backward_compatibility)	10m 48s
integration (integration_memberlist)	8m 12s
integration (integration_memberlist)	8m 12s
integration (integration_querier)	15m 10s
integration (integration_querier)	15m 10s
integration (integration_ruler)	5m 45s
integration (integration_ruler)	5m 45s
integration (integration_query_fuzz)	4m 36s
integration (integration_query_fuzz)	4m 36s
deploy_website	0s
deploy_website	0s
deploy	0s
deploy	0s
	3h 14m 26s

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