The sound, vibrate and ticker will only be played once

Android doc:https://developer.android.com/reference/android/app/Notification.Builder#setOnlyAlertOnce(boolean)

PiperOrigin-RevId: 384227580

library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java

@@ -1389,6 +1389,7 @@ public class PlayerNotificationManager {
       builder.setGroup(groupKey);
       builder.setGroup(groupKey);
     }
     }
 
 
+    builder.setOnlyAlertOnce(true);
     return builder;
     return builder;
   }
   }