Bug: Form的可选验证在清空数据后依然生效

[sw-Fang]

Version

Vben Admin V5

Describe the bug?

当触发了Form的字段校验之后，就算清空数据不想填写数据，校验依然生效。

Reproduction

官方示例

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (16) x64 12th Gen Intel(R) Core(TM) i5-12600KF
    Memory: 3.79 GB / 63.84 GB
  Binaries:
    Node: 20.17.0 - D:\work\nodejs\node.EXE
    Yarn: 1.22.22 - D:\work\nodejs\yarn.CMD
    npm: 10.8.2 - D:\work\nodejs\npm.CMD
    pnpm: 10.6.5 - D:\work\nodejs\pnpm.CMD
  Browsers:
    Edge: Chromium (127.0.2651.74)
    Internet Explorer: 11.0.22621.3527

Relevant log output

Validations

• Read the docs
• Ensure the code is up to date. (Some issues have been fixed in the latest version)
• I have searched the existing issues and checked that my issue does not duplicate any existing issues.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[chenwei1109]

这里要加上 允许null 校验，zod 的校验只判断了undefined