fix(middleware): guard request.auth access in is_frontend_request #270681

Job	Run time
detect what files changed	15s
backend migration tests	4m 16s
cli test	2m 26s
select tests	51s
api docs test	5m 55s
check migration	1m 38s
backend typing	2m 56s
monolith-dbs test	7m 32s
requirements check	-1s
api url typescript generation	-1s
calculate test shards	12s
backend test (3)	13m 56s
backend test (2)	14m 3s
backend test (4)	13m 10s
backend test (5)	12m 35s
backend test (6)	13m 42s
backend test (0)	15m 33s
backend test (10)	12m 39s
backend test (1)	14m 43s
backend test (9)	14m 40s
backend test (7)	13m 47s
backend test (18)	13m 57s
backend test (20)	14m 47s
backend test (13)	11m 9s
backend test (19)	13m 49s
backend test (8)	14m 50s
backend test (16)	13m 10s
backend test (17)	13m 23s
backend test (11)	13m 35s
backend test (14)	13m 44s
backend test (15)	13m 17s
backend test (12)	14m 36s
backend test (21)	14m 3s
Backend	2s
	5h 29m 9s

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