ref(JitsiTrackEvents.LOCAL_TRACK_STOPPED) expose jitsiLocalTrack as listener parameter

modules/RTC/JitsiLocalTrack.js

             /* conference */ null,
             stream,
             track,
-            /* streamInactiveHandler */ () => this.emit(LOCAL_TRACK_STOPPED),
+            /* streamInactiveHandler */ () => this.emit(LOCAL_TRACK_STOPPED, this),
             mediaType,
             videoType);