Fix new account does not update but stays at "loading"

api/js/etemplate/Et2Tree/Et2Tree.ts

@@ -514,7 +514,7 @@ export class Et2Tree extends Et2WidgetWithSelectMixin(LitElement) implements Fin
 				return Promise.resolve();
 			}
 			return this.handleLazyLoading(item).then((result) => {
-				item.item = [...result.item]
+				Object.assign(item, result);
 				this.requestUpdate("_selectOptions")
 			})
 		}

mail/js/app.js

@@ -682,7 +682,8 @@ app.classes.mail = AppJS.extend(
 
 						tree._selectOptions.push({
 							id: "" + _id,
-							label: this.egw.lang("Loading..."),
+							// Use text instead of label because server side is only sending text
+							text: this.egw.lang("Loading..."),
 							selected: false,
 							loading: true,
 							lazy: true