feat(seer): Fall back to contextvar ViewerContext for Seer requests #247252

Job	Run time
detect what files changed	13s
cli test	2m 8s
api docs test	5m 32s
prepare selective tests	1m 32s
backend migration tests	8m 9s
monolith-dbs test	7m 19s
check migration	1m 12s
requirements check	0s
backend typing	4m 48s
api url typescript generation	-1s
calculate test shards	2m 10s
backend test (0)	6m 9s
backend test (2)	6m 46s
backend test (1)	6m 37s
Backend	3s
	52m 37s

Provide feedback