fix(web): 统一危险操作按钮样式

src/views/permission/MenuManagementView.vue

@@ -37,7 +37,7 @@ const { treeData, loading, form, parentOptions, resetForm, selectNode, saveMenu,
         <div
           ><h2>{{ form.id ? '编辑菜单' : '新增菜单' }}</h2></div
         >
-        <el-button v-if="form.id" type="danger" plain @click="deleteMenu">删除菜单</el-button>
+        <el-button v-if="form.id" type="danger" @click="deleteMenu">删除菜单</el-button>
       </div>
       <el-form label-width="110px" label-position="right" class="menu-editor-form">
         <el-form-item label="菜单名称" required>