fix(JingleSession) Avoid pushing encodings configuration task to the queue.

When configureSenderVideoEncodings task is pushed to the modification queue, there might not be a setParameters call in progress and this new one will not get chanined to any promise. However, when the task finally is executed, there is a chance for another setParameters method execution to be in progress and can result in setParameters call failing. Also, these extra steps to ensure that the sender encodings are correctly encoded are no longer needed since with multi-stream mode, we do not change the source video type and the previous encodings config will still be valid.

modules/xmpp/JingleSessionPC.js

@@ -666,7 +666,6 @@ export default class JingleSessionPC extends JingleSession {
                     const oldSdp = new SDP(this.peerconnection.localDescription.sdp);
 
                     this._renegotiate()
-                        .then(() => this.peerconnection.configureSenderVideoEncodings())
                         .then(() => {
                             const newSdp = new SDP(this.peerconnection.localDescription.sdp);
 
@@ -2387,13 +2386,6 @@ export default class JingleSessionPC extends JingleSession {
                             && oldTrack.isVideoTrack()) {
                             newTrack.setSourceName(oldTrack.getSourceName());
                         }
-
-                        if (newTrack?.isVideoTrack()) {
-                            logger.debug(`${this} replaceTrack worker: configuring video stream`);
-
-                            // Configure the video encodings after the track is replaced.
-                            return this.peerconnection.configureSenderVideoEncodings(newTrack);
-                        }
                     });
                 })
                 .then(() => finishedCallback(), error => finishedCallback(error));