feat(seer): Add rca_source to supergroup queries with feature flag gating #248342

Job	Run time
detect what files changed	7s
api docs test	5m 37s
backend migration tests	8m 8s
select tests	29s
monolith-dbs test	6m 56s
backend typing	4m 52s
check migration	1m 12s
cli test	1m 52s
requirements check	-1s
api url typescript generation	-1s
calculate test shards	4s
backend test (0)	13m 57s
backend test (4)	12m 56s
backend test (7)	14m 37s
backend test (5)	13m 53s
backend test (10)	13m 27s
backend test (15)	12m 14s
backend test (1)	14m 2s
backend test (8)	14m 24s
backend test (9)	14m 41s
backend test (6)	13m 39s
backend test (11)	14m 7s
backend test (13)	13m 41s
backend test (2)	14m 16s
backend test (17)	13m 49s
backend test (16)	13m 52s
backend test (12)	14m 20s
backend test (3)	14m 0s
backend test (19)	13m 33s
backend test (18)	14m 9s
backend test (21)	14m 32s
backend test (20)	14m 14s
backend test (14)	13m 49s
Backend	4s
	5h 35m 31s

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