fix: Reads lobby jid from correct location in the error. (#1830)

* fix: Reads lobby jid from correct location in the error.

* squash: Add todo comment.

modules/xmpp/ChatRoom.js

                 + 'xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"]').length) {
 
             // let's extract the lobby jid from the custom field
-            const lobbyRoomNode = $(pres).find('>lobbyroom');
+            const lobbyRoomNode = $(pres).find('>error[type="auth"]>lobbyroom');
             let lobbyRoomJid;
 
             if (lobbyRoomNode.length) {
                 lobbyRoomJid = lobbyRoomNode.text();
+            } else {
+                // let's fallback to old location of lobbyroom node, TODO: to be removed in the future once
+                // everything is updated
+                const lobbyRoomOldNode = $(pres).find('>lobbyroom');
+
+                if (lobbyRoomOldNode.length) {
+                    lobbyRoomJid = lobbyRoomOldNode.text();
+                }
             }
 
             this.eventEmitter.emit(XMPPEvents.ROOM_CONNECT_MEMBERS_ONLY_ERROR, lobbyRoomJid);