🐛[BUG] ProForm.Item、ProFormText 等表单项不支持help字段

提问前先看看：

https://github.com/ryanhanwu/How-To-Ask-Questions-The-Smart-Way/blob/main/README-zh_CN.md

### 🐛 bug 描述

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设置help 字段不生效


### 📷 复现步骤

### 🏞 期望结果

可以像Form.Item 一样，设置help
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### 💻 复现代码

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### © 版本信息

- ProComponents 版本: 2.8.6
- umi 版本 4.4.5
- 浏览器环境 chrome
- 开发环境 windows

### 🚑 其他信息

Start at the ProFormText and ProForm.Item entry points and reproduce the reported behavior with the supplied help prop in ProComponents 2.8.6. Compare the result with the shown Form.Item usage; done means ProFormText and the affected ProForm item components display help consistently with Form.Item.

Written by the indexing model from the issue text.