feat: Disable p2p when transcribing is enabled. (#2812)

* feat: Disable p2p when transcribing is enabled.

JitsiConference.js

     });
 };
 
+/** Set the transcribingEnabled flag. When transcribing is enabled p2p is
+ * disabled. */
+JitsiConference.prototype._setTranscribingEnabled = function(enabled) {
+    if (this._transcribingEnabled !== enabled) {
+        this._transcribingEnabled = enabled;
+        this._maybeStartOrStopP2P(true);
+    }
+};
+
 /**
  * Updates conference startMuted policy if needed and fires an event.
  *
     const peers = this.getParticipants();
     const peerCount = peers.length;
     const hasBotPeer = peers.find(p => p.getBotType() === 'poltergeist' || p.hasFeature(FEATURE_JIGASI)) !== undefined;
-    const shouldBeInP2P = peerCount === 1 && !hasBotPeer && !this._hasVisitors;
+    const shouldBeInP2P = peerCount === 1 && !hasBotPeer && !this._hasVisitors && !this._transcribingEnabled;
 
     logger.debug(`P2P? peerCount: ${peerCount}, hasBotPeer: ${hasBotPeer} => ${shouldBeInP2P}`);
 

JitsiConferenceEventManager.js

                 video && (conference.isVideoMutedByFocus = true);
                 conference._updateStartMutedPolicy(audio, video);
             }
+            if (metadata.recording && typeof metadata.recording.isTranscribingEnabled !== 'undefined') {
+                conference._setTranscribingEnabled(Boolean(metadata.recording.isTranscribingEnabled));
+            }
             conference.eventEmitter.emit(JitsiConferenceEvents.METADATA_UPDATED, metadata);
         });
     }