-Modified selected play queue item to highlight entire item instead of text.

-Added selected item bullet.
-Modified play queue panel darker on main video player.
-Fixed color issue on play queue panel on light-themed main video player.
-Fixed hold-to-enqueue tooltip flashing when clicked on earlier sdk versions.
-Fixed queue item removal causing metadata for currently playing to refresh.

app/src/main/java/org/schabi/newpipe/player/playback/MediaSourceManager.java

@@ -178,7 +178,8 @@ public class MediaSourceManager {
             case REMOVE:
                 final RemoveEvent removeEvent = (RemoveEvent) event;
                 remove(removeEvent.getRemoveIndex());
-                sync();
+                // Sync only when the currently playing is removed
+                if (removeEvent.getQueueIndex() == removeEvent.getRemoveIndex()) sync();
                 break;
             case MOVE:
                 final MoveEvent moveEvent = (MoveEvent) event;