openvidu-browser: init hark events on Publisher#replaceTrack

openvidu-browser/src/OpenVidu/Publisher.ts

@@ -786,6 +786,9 @@ export class Publisher extends StreamManager {
         } else if(track.kind === 'audio' && updateLastConstraints) {
             this.openvidu.sendTrackChangedEvent(this,'trackReplaced', trackInfo.oldLabel, trackInfo.newLabel, 'audioActive');
         }
+        if (track.kind === 'audio') {
+            this.stream.initHarkEvents();
+        }
     }
 
     /* Private methods */

openvidu-browser/src/OpenVidu/Stream.ts

@@ -1388,7 +1388,10 @@ export class Stream {
         }
     }
 
-    private initHarkEvents(): void {
+    /**
+     * @hidden
+     */
+    initHarkEvents(): void {
         if (!!this.mediaStream!.getAudioTracks()[0]) {
             // Hark events can only be set if audio track is available
             if (this.session.anySpeechEventListenerEnabled('publisherStartSpeaking', true, this.streamManager)) {