chore: Disable iOS external group distribution by default (#30272) #1425

Job	Run time
Expo dev build (main-dev-expo) / prepare	1m 33s
Expo dev build (main-dev-expo) / update-build-version	-6s
Expo dev build (main-dev-expo) / Setup Dependencies (ios) / Setup Node Modules (ios)	4m 46s
Expo dev build (main-dev-expo) / Setup Dependencies (android) / Setup Node Modules (android)	2m 46s
Expo dev build (main-dev-expo) / build (android)	13m 59s
Expo dev build (main-dev-expo) / build (ios)	24m 4s
Expo dev build (main-dev-expo) / Emit build metadata	18s
	47m 20s

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