feat(router): 添加路由切换后页面滚动到顶部的功能

 /*
  * @Date: 2025-03-20 20:36:36
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-03-20 21:47:32
+ * @LastEditTime: 2025-03-20 22:46:37
  * @FilePath: /mlaj/src/router/index.js
  * @Description: 文件描述
  */
@@ -69,6 +69,10 @@ const routes = [
 const router = createRouter({
   history: createWebHistory(),
   routes,
+  scrollBehavior(to, from, savedPosition) {
+    // 每次路由切换后，页面滚动到顶部
+    return savedPosition || { top: 0, left: 0 }
+  }
 })
 
 export default router