<fix>[normal]修复菜单手风琴效果

src/view/layout/MainAside.vue

@@ -3,8 +3,8 @@
     <h3 class="mb-2" style="text-align: center;">主菜单</h3>
     <el-scrollbar height="calc(100vh - 120px)">
       <el-menu active-text-color="#666699" background-color=#ffffff class="el-menu-vertical-demo"
-               text-color="#000000"  v-for="{ico, index, mainMenu, minor} in menu" style="border: 0">
-        <el-sub-menu :index='index'>
+               text-color="#000000" style="border: 0" unique-opened>
+        <el-sub-menu v-for="{ico, index, mainMenu, minor} in menu" :index='index' :key="index">
           <template #title>
             <el-icon color="#409EFC">
               <component :is='ico'></component>