fix slow folder page

~ stabilize props: move isCurrent check to inside SongItem component

src/utils/useCreateTrackProps.ts

@@ -5,8 +5,5 @@ export default function createTrackProps(track: Track) {
   return {
     track,
     index: track.index + 1,
-    isCurrent: queue().currenttrackhash === track.trackhash,
-    isCurrentPlaying:
-      queue().currenttrackhash === track.trackhash && queue().playing,
   };
 }