fix: 修复挂接站点搜索报错

src/pages/userCenter/userManage/AddUserModal.jsx

@@ -333,7 +333,7 @@ const AddUserModal = props => {
               allowClear
               showSearch
               filterOption={(input, option) =>
-                option.children.toLowerCase().indexOf(input.toLowerCase()) >= 0
+                (option?.label ?? '').toLowerCase().includes(input.toLowerCase())
               }
               placeholder="请选择关联站点"
               options={siteList}