fix(livekit): incorrect mute state with muteOnStart=false + eventSource=agent

The rtc-event-receiver bus incorrectly parses the TrackPublication
`muted` property as `isMuted`. This causes the initial mute state for a
published track to always be nullish/false-y - and it causes a BBB state
inconsistency when muteOnStart=false.

Author: prlanzarin

CHANGELOG.md

@@ -6,6 +6,10 @@ Final releases will consolidate all intermediate changes in chronological order.
 
 For previous changes, see the [release notes](https://github.com/bigbluebutton/bbb-webrtc-sfu/releases).
 
+### UNRELEASED
+
+* fix(livekit): incorrect mute state with muteOnStart=false + eventSource=agent
+
 ### v2.21.0
 
 * feat(livekit): add agent conn state and event metrics

lib/livekit/livekit-rtc-event-receiver.js

@@ -96,7 +96,7 @@ class LiveKitRtcEventReceiver {
       width: publication.dimensions?.width,
       height: publication.dimensions?.height,
       mimeType: publication.mimeType,
-      muted: publication.isMuted,
+      muted: publication.muted,
     }
   }