Fix crash when DISPLAY_CONTENT while playing

When a video is playing and on another device you browse libraries on a casting device it cause the app to crash

The onDisplayContent method is trying to read ExoPlayer state but from the socket thread and not the main thread

java.lang.IllegalStateException: Player is accessed on the wrong thread.
Current thread: 'DefaultDispatcher-worker-4'
Expected thread: 'main'
See https://developer.android.com/guide/topics/media/issues/player-accessed-on-wrong-thread
	at androidx.media3.exoplayer.ExoPlayerImpl.verifyApplicationThread(ExoPlayerImpl.java:2842)
	at androidx.media3.exoplayer.ExoPlayerImpl.getPlaybackState(ExoPlayerImpl.java:514)
	at androidx.media3.common.BasePlayer.isPlaying(BasePlayer.java:124)
	at org.jellyfin.androidtv.ui.playback.VideoManager.isPlaying(VideoManager.java:341)
	at org.jellyfin.androidtv.ui.playback.PlaybackController.isPlaying(PlaybackController.java:262)
	at org.jellyfin.androidtv.data.eventhandling.SocketHandler.onDisplayContent(SocketHandler.kt:184)
	at org.jellyfin.androidtv.data.eventhandling.SocketHandler.lambda$13$lambda$8(SocketHandler.kt:103)
	at org.jellyfin.androidtv.data.eventhandling.SocketHandler$$ExternalSyntheticLambda3.onReceive(Unknown Source:4)
	at org.jellyfin.androidtv.data.eventhandling.SocketHandler$_init_$lambda$13$$inlined$addGeneralCommandsListener$default$1.onReceive(ListenerRegistrationExtensions.kt:68)
	at org.jellyfin.sdk.api.sockets.helper.ListenerHelper.forwardMessage(ListenerHelper.kt:37)
	at org.jellyfin.sdk.api.sockets.SocketInstance.forwardMessage(SocketInstance.kt:283)
	at org.jellyfin.sdk.api.sockets.SocketInstance.access$forwardMessage(SocketInstance.kt:35)
	at org.jellyfin.sdk.api.sockets.SocketInstance$connectAndBind$2.invokeSuspend(SocketInstance.kt:220)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:793)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:697)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:684)

CONTRIBUTORS.md

@@ -12,6 +12,7 @@
  - [GodTamIt](https://github.com/GodTamIt)
  - [sparky3387](https://github.com/sparky3387)
  - [mohd-akram](https://github.com/mohd-akram)
+ - [3l0w](https://github.com/3l0w)
 
 # Emby Contributors
 

app/src/main/java/org/jellyfin/androidtv/data/eventhandling/SocketHandler.kt

@@ -178,12 +178,12 @@ class SocketHandler(
 		}
 	}
 
-	private fun onDisplayContent(itemId: UUID, itemKind: BaseItemKind) {
+	private fun onDisplayContent(itemId: UUID, itemKind: BaseItemKind) = coroutineScope.launch(Dispatchers.Main) {
 		val playbackController = playbackControllerContainer.playbackController
 
 		if (playbackController?.isPlaying == true || playbackController?.isPaused == true) {
 			Timber.i("Not launching $itemId: playback in progress")
-			return
+			return@launch
 		}
 
 		Timber.i("Launching $itemId")