优化消息按钮点击不能弹出消息框的问题

src/layout/components/Navbar.vue

@@ -9,7 +9,7 @@
     <div class="right-menu">
 
       <template v-if="device !== 'mobile'">
-        <div class="right-menu-item hover-effect">
+        <div @click="openMsg()" class="right-menu-item hover-effect">
           <el-badge v-if="msgCount > 0" :value="msgCount" :max="99" class="dot">
           </el-badge>