fix: 修改部门

src/components/company/wx-tree.vue

@@ -23,7 +23,7 @@ import wxTree from './wx-tree.vue';
             <div class="tree-right">
               <el-button v-if="item.isStore == 0" type="text" @click.stop="addChild(item)">添加子部门</el-button>
               <el-button type="text" @click.stop="modChild(item)">修改名称</el-button>
-              <el-button v-if="item.level > 0 && item.children" type="text" @click.stop="delChild(item)">删除</el-button>
+              <el-button v-if="item.level > 0 && item.children.length" type="text" @click.stop="delChild(item)">删除</el-button>
             </div>
           </div>
         </div>