修复侧边栏收缩后菜单被超出隐藏的bug

src/view/main/components/side-menu/collapsed-menu.vue

@@ -1,5 +1,5 @@
 <template>
-  <Dropdown @on-click="handleClick" transer placement="right-start">
+  <Dropdown @on-click="handleClick" placement="right-start">
     <a class="drop-menu-a" type="text" :style="{textAlign: !hideTitle ? 'left' : ''}"><common-icon :size="rootIconSize" :color="textColor" :type="parentItem.icon"/><span class="menu-title" v-if="!hideTitle">{{ showTitle(parentItem) }}</span><Icon v-if="!hideTitle" :size="10" :color="textColor" type="chevron-right" style="float: right;margin-top: 4px;"/></a>
     <DropdownMenu slot="list">
       <template v-for="child in children">

src/view/main/main.vue

@@ -1,6 +1,6 @@
 <template>
   <Layout style="height: 100%" class="main">
-    <Sider hide-trigger collapsible :width="256" :collapsed-width="64" v-model="collapsed" class="left-sider" style="overflow: hidden;">
+    <Sider hide-trigger collapsible :width="256" :collapsed-width="64" v-model="collapsed" :class="collapsed ? '' : 'left-sider'" :style="{overflow: collapsed ? '' : 'hidden'}">
       <side-menu  :active-name="$route.name" :collapsed="collapsed" @on-select="turnToPage" :menu-list="menuList">
         <!-- 需要放在菜单上面的内容，如Logo，写在side-menu标签内部，如下 -->
         <div class="logo-con">