🐛 [BUG] ProFormSelect 中传递了默认值，但没有渲染在显示区域中

### 🐛 bug 描述
ProFormSelect 中传递了默认值，但没有渲染在显示区域中，并且显示区域是空的，连占位符都没有显示，这说明可能有值但没有被正确渲染

### 📷 复现步骤 | Recurrence steps
运行代码

### 🏞 期望结果 | Expected results
正确设置初始值

### 💻 复现代码 | Recurrence code
```tsx
import { GetCategories } from '@/services/api/category';
import { SelectOptionType } from '@/typings';
import { ProFormSelect, ProFormSelectProps } from '@ant-design/pro-components';
import { BaseOptionType } from 'antd/es/select';
import React from 'react';

const ProformSelectCategory = (
props: ProFormSelectProps,
): React.ReactElement => {
const fetchCategoryList = async ({ keyWords }: { keyWords: string; }): Promise => {
// if (!keyWords) return [];

console.debug(' 搜索的关键字: ', keyWords, props.initialValue);

try {
const data = await GetCategories();
return data.map((it): SelectOptionType => {
return { label: it.name!, value: it.id!, key: it.id };
});
} catch (e) {
console.debug('没有找到该分类');
return [];
}
};

return (

fieldProps={{
labelInValue: true,
}}
{...props}
request={fetchCategoryList}
/>
);
};

export default ProformSelectCategory;

```

### © 版本信息

- Ant Design Pro 版本: 2.6.48
- umi 版本 2.2.2
- 浏览器环境 Edge
- 开发环境 Windows Edge

### 🚑 其他信息

补充 props.initialValue 的值是一个数字类型的id，对应 ` { label: it.name!, value: it.id!, key: it.id };`中的 value 和 key

Start by reproducing the provided ProformSelectCategory wrapper, focusing on ProFormSelect with fieldProps.labelInValue, props.initialValue, and the fetchCategoryList request. Check how the asynchronously returned options interact with the numeric initial value; done means the matching category label renders in the select and the empty display behavior is resolved.

Written by the indexing model from the issue text.