fix: 修复顶栏菜单重复出现的bug

web/src/pinia/modules/router.js

@@ -100,14 +100,13 @@ export const useRouterStore = defineStore('router', () => {
 
   watchEffect(() => {
     let topActive = sessionStorage.getItem('topActive')
-    asyncRouters.value[0]?.children.forEach((item) => {
     // 初始化菜单内容，防止重复添加
     topMenu.value = [];
+    asyncRouters.value[0]?.children.forEach((item) => {
       if (item.hidden) return
       menuMap[item.name] = item
       topMenu.value.push({ ...item, children: [] })
     })
-
     if (!topActive || topActive === 'undefined' || topActive === 'null') {
       topActive = findTopActive(menuMap, route.name);
     }