Merge pull request #1094 from jitsi/hips-fixup

hips: fix handling senders / receivers when in P2P mode

JitsiConference.js

     this.eventEmitter.emit(JitsiConferenceEvents.TRACK_ADDED, newTrack);
 
     // Setup E2EE handling, if supported.
-    if (this._e2eeCtx) {
+    if (!this.isP2PActive() && this._e2eeCtx) {
         const activeTPC = this.getActivePeerConnection();
         const sender = activeTPC ? activeTPC.findSenderForTrack(newTrack.track) : null;
 
     }
 
     // Setup E2EE handling, if supported.
-    if (this._e2eeCtx) {
+    if (!this.isP2PActive() && this._e2eeCtx) {
         const activeTPC = this.getActivePeerConnection();
         const receiver = activeTPC ? activeTPC.findReceiverForTrack(track.track) : null;