fix: emit mute status event for unsubscribed user (#625)

* fix: emit mute status event for unsubscribed user

* fix: check if muted changed in updateInfo

* refactor: check metadataMuted changed later

* Create .changeset/blue-planes-pretend.md

---------

Co-authored-by: lukasIO <[email protected]>

Author: wjaykim

.changeset/blue-planes-pretend.md

@@ -0,0 +1,5 @@
+---
+"livekit-client": patch
+---
+
+Emit mute status events also for unsubscribed publications

src/room/track/RemoteTrackPublication.ts

@@ -207,8 +207,13 @@ export default class RemoteTrackPublication extends TrackPublication {
   /** @internal */
   updateInfo(info: TrackInfo) {
     super.updateInfo(info);
+    const prevMetadataMuted = this.metadataMuted;
     this.metadataMuted = info.muted;
-    this.track?.setMuted(info.muted);
+    if (this.track) {
+      this.track.setMuted(info.muted);
+    } else if (prevMetadataMuted !== info.muted) {
+      this.emit(info.muted ? TrackEvent.Muted : TrackEvent.Unmuted);
+    }
   }
 
   private emitSubscriptionUpdateIfChanged(previousStatus: TrackPublication.SubscriptionStatus) {