do not send the presence rai on leave (unnecessary)

src/plugins/converse-rai.js

@@ -24,7 +24,7 @@ converse.plugins.add('converse-rai', {
         if (this.session.get('connection_status') === converse.ROOMSTATUS.ENTERED) {
           if (this.get('hidden') && api.settings.get('muc_subscribe_to_rai') && this.getOwnAffiliation() !== 'none') {
             await this.leave();
-            this.enableRAI();
+            // this.enableRAI();
           } else {
             await this.__super__.onConnectionStatusChanged.apply(this, arguments);
           }
@@ -47,7 +47,7 @@ converse.plugins.add('converse-rai', {
               this.sendMarkerForLastMessage('received', true);
               await this.leave();
             }
-            this.enableRAI();
+            // this.enableRAI();
           }
         } else if (conn_status === converse.ROOMSTATUS.DISCONNECTED) {
           this.rejoin();