rc1版本的menu菜单收缩和展开也太卡了

[TothingWay]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

2.0.0-rc.1

Environment

MacOS 10.15.7

Reproduction link

https://github.com/anncwb/vue-vben-admin/blob/main/CHANGELOG.zh_CN.md

Steps to reproduce

1.后端返回路由列表，使用menu组件动态渲染菜单
2.打开chrome控制台，点击收缩，看到在body创建了很多menu-item相关组件
3.点击展开，会等待body中所有menu-item相关组件移除后再展开
4.收缩展开存在严重卡顿

这里链接是是v-ben-admin更新日志，其中提到这个卡顿，且降级了antd到beta15版本

What is expected?

期望和收缩展开流畅不卡顿

What is actually happening?

期望和收缩展开卡顿

[hj2060]

同样遇到了这个问题 横向导航子菜单在收缩的时候会有虚影 背景非白色时非常明显 1.x 版本就没有这个问题

[github-actions]

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