fix(player): reduce average CPU usage from 100% to 20%

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2346>

front/src/composables/audio/player.ts

@@ -179,7 +179,9 @@ export const usePlayer = createGlobalState(() => {
         ? progress
         : 0
 
-      document.documentElement.style.setProperty('--fw-track-progress', `${lastProgress}%`)
+      for (const bar of document.querySelectorAll<HTMLElement>('.ui.progress .position.bar')) {
+        bar.style.setProperty('--fw-track-progress', `${lastProgress}%`)
+      }
     }
   })