Switch from Converse v10.1.6 to upstream (unreleased v11):

* various WIP to change the Converse version

conversejs/lib/plugins/livechat-specific.ts

@@ -114,6 +114,11 @@ export const livechatSpecificsPlugin = {
       // We are probably on a dev instance, so we will add _converse in window:
       (window as any)._livechatConverse = _converse
     }
+
+    // Temporary Fix, because v11 removes some constants from _converse.
+    // TODO: remove this line, and replace by something else.
+    // Waiting for response to https://github.com/conversejs/converse.js/issues/3440
+    _converse.CHATROOMS_TYPE = 'chatroom'
   },
   overrides: {
     ChatRoom: {