Remove `SelectedRoom` from online play tests #24341

Job	Run time
Test (Windows, windows-latest, SingleThread)	5m 3s
Test (Windows, windows-latest, MultiThreaded)	5m 2s
Build only (iOS)	4m 16s
Code Quality	5m 4s
Build only (Android)	1m 48s
Test (Linux, ubuntu-latest, SingleThread)	5m 20s
Test (Linux, ubuntu-latest, MultiThreaded)	5m 20s
	31m 53s

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