refactor(antd): 移除Popconfirm中已废弃的getVxePopupContainer属性

antd已支持滚动跟随，不再需要手动指定getVxePopupContainer属性。删除相关代码及工具函数，简化实现。

apps/web-antd/src/views/system/client/index.vue

@@ -6,7 +6,6 @@ import type { Client } from '#/api/system/client/model';
 
 import { useAccess } from '@vben/access';
 import { Page, useVbenDrawer } from '@vben/common-ui';
-import { getVxePopupContainer } from '@vben/utils';
 
 import { Modal, Popconfirm, Space } from 'antdv-next';
 
@@ -160,7 +159,6 @@ const { hasAccessByCodes } = useAccess();
           </ghost-button>
           <Popconfirm
             :disabled="row.id === 1"
-            :get-popup-container="getVxePopupContainer"
             placement="left"
             title="确认删除？"
             @confirm="handleDelete(row)"