fix: Adds back removed method used by jibri. (#1561)

* fix: Adds back removed method used by jibri.

It was removed by https://github.com/jitsi/lib-jitsi-meet/pull/1512.

* squash: Adds a deprecated note.

modules/xmpp/ChatRoom.js

             errorCallback);
     }
 
+    /**
+     * Adds the key to the presence map, overriding any previous value.
+     * This method is used by jibri.
+     *
+     * @param key The key to add or replace.
+     * @param values The new values.
+     * @returns {boolean|null} <tt>true</tt> if the operation succeeded or <tt>false</tt> when no add or replce was
+     * performed as the value was already there.
+     * @deprecated Use 'addOrReplaceInPresence' instead. TODO: remove it from here and jibri.
+     */
+    addToPresence(key, values) {
+        return this.addOrReplaceInPresence(key, values);
+    }
+
     /**
      * Adds the key to the presence map, overriding any previous value.
      * @param key The key to add or replace.