fix(AudioTrack) fix currentMuted

Co-authored-by: Arun Nadesh <arun.raveendran@hg.ninjavan.co>

react/features/base/media/components/web/AudioTrack.tsx

             const currentMuted = this._ref.muted;
             const nextMuted = nextProps._muted;
 
-            if (typeof nextMuted === 'boolean' && currentMuted !== nextVolume) {
+            if (typeof nextMuted === 'boolean' && currentMuted !== nextMuted) {
                 this._ref.muted = nextMuted;
             }
         }