refactor: permission (#357)

* refactor: permission

* chore: update

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* fix: 修复`mix`混合模式导航在生产环境左侧菜单一定机率不显示的问题

* chore: update

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* chore: update

* chore: update

src/style/element-plus.scss

@@ -33,7 +33,7 @@
 }
 
 .is-dark {
-  z-index: 99999 !important;
+  z-index: 9999 !important;
 }
 
 /* 重置 el-button 中 icon 的 margin */