Fixes the access to playback state from the wrong thread

app/src/main/java/com/vitorpamplona/amethyst/ui/components/VideoView.kt

@@ -291,8 +291,8 @@ fun GetVideoController(
     DisposableEffect(key1 = videoUri) {
         // If it is not null, the user might have come back from a playing video, like clicking on
         // the notification of the video player.
-        scope.launch(Dispatchers.IO) {
         if (controller.value == null) {
+            scope.launch(Dispatchers.IO) {
                 PlaybackClientController.prepareController(
                     uid,
                     videoUri,
@@ -338,6 +338,7 @@ fun GetVideoController(
                         }
                     }
                 }
+            }
         } else {
             controller.value?.let {
                 if (it.playbackState == Player.STATE_IDLE || it.playbackState == Player.STATE_ENDED) {
@@ -355,7 +356,6 @@ fun GetVideoController(
                 }
             }
         }
-        }
 
         onDispose {
             if (!keepPlaying.value) {