fix code review issues

ui/src/utils/mitt.ts

@@ -83,10 +83,10 @@ export default function mitt(all?: EventHandlerMap): Emitter {
      * @memberOf mitt
      */
     emit<T = any>(type: EventType, evt: T) {
-      ((all?.get(type) || []) as EventHandlerList).slice().map((handler) => {
+      ((all?.get(type) || []) as EventHandlerList).slice().forEach((handler) => {
         handler(evt);
       });
-      ((all?.get('*') || []) as WildCardEventHandlerList).slice().map((handler) => {
+      ((all?.get('*') || []) as WildCardEventHandlerList).slice().forEach((handler) => {
         handler(type, evt);
       });
     },