Fix media player not pausing properly (#388)

Author: newmskywalker

android/features/music-player/src/main/java/io/newm/feature/musicplayer/service/MusicService.kt

@@ -141,7 +141,9 @@ class MediaService : MediaSessionService() {
             playBackAuthorized = when (focusRequestResult) {
                 AudioManager.AUDIOFOCUS_REQUEST_FAILED -> false
                 AudioManager.AUDIOFOCUS_REQUEST_GRANTED -> {
-                    player.play()
+                    if (player.playWhenReady) {
+                        player.play()
+                    }
                     true
                 }
 
@@ -185,4 +187,4 @@ class MediaService : MediaSessionService() {
             )
         }
     }
-}
+}