Don't show error dialog when broadcast stops without error (Obj-C bridge) #610

Job	Run time
run (macos-13, 14.2, iOS Simulator,OS=17.2,name=iPhone 14 Pro)	1m 8s
run (macos-13, 14.2, macOS)	1m 35s
run (macos-13, 14.2, macOS,variant=Mac Catalyst)	1m 42s
run (macos-14, 15.4, iOS Simulator,OS=17.5,name=iPhone 15 Pro)	52s
run (macos-14, 15.4, macOS)	49s
run (macos-14, 15.4, macOS,variant=Mac Catalyst)	45s
run (macos-14, 15.4, visionOS Simulator,name=Apple Vision Pro)	53s
run (macos-14, 15.4, tvOS Simulator,name=Apple TV)	1m 10s
run (macos-15, 16.1, iOS Simulator,OS=18.1,name=iPhone 16 Pro)	1m 1s
run (macos-15, 16.1, macOS)	56s
run (macos-15, 16.1, macOS,variant=Mac Catalyst)	1m 3s
	11m 54s

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