🐛[BUG]`ProFormList`在第一次提交时没有触发`transform`

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

我留意到在 #5914 中提到`ProFormList`已经支持了`transform`，但发现在第一次提交时没有触发`transform`

### 📷 复现步骤

[复现链接](https://stackblitz.com/edit/vitejs-vite-osr618?file=src%2FApp.tsx)，可以看到第一次点击提交时控制台没有打印`transform`

### © 版本信息

- "@ant-design/pro-form": "^2.29.0"
- 浏览器环境 Chrome 126.0.0.0

### 🚑 其他信息

Start with the linked StackBlitz reproduction and inspect the ProFormList submission flow in @ant-design/pro-form around transform handling. Confirm that the first submit invokes transform and produces the expected console output, then verify the behavior on later submissions as a regression check.

Written by the indexing model from the issue text.