Simplify broadcast extension setup with standard format for identifie… #848

Job	Run time
test (macos-13, 14.2, iOS Simulator,OS=17.2,name=iPhone 14 Pro)	18m 15s
test (macos-13, 14.2, macOS)	6m 28s
test (macos-13, 14.2, macOS,variant=Mac Catalyst)	4m 42s
test (macos-14, 15.4, iOS Simulator,OS=17.5,name=iPhone 15 Pro)	17m 5s
test (macos-14, 15.4, macOS)	5m 24s
test (macos-14, 15.4, macOS,variant=Mac Catalyst)	5m 32s
test (macos-14, 15.4, visionOS Simulator,name=Apple Vision Pro)	14m 19s
test (macos-14, 15.4, tvOS Simulator,name=Apple TV)	11m 51s
test (macos-15, 16.2, iOS Simulator,OS=18.1,name=iPhone 16 Pro)	8m 3s
test (macos-15, 16.2, macOS)	5m 16s
test (macos-15, 16.2, macOS,variant=Mac Catalyst)	5m 59s
	1h 42m 54s

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