Introduce wrong parameter value when using validator in form component

[kvoon3]

• I'm sure this does not appear in the issue list of the repository

Basic Info

• Package Name And Version: @arco-design/[email protected]
• Framework version: ^3.5.13
• Browser: chrome131.0.6778.205
• Reproduction Link: https://stackblitz.com/edit/vitejs-vite-cxpynwqr?file=src%2FApp.vue

What is expected?

When we use validator to check a form item with empty string, the validator should pass a 'empty string' value, rather than a 'undefined' value

Steps to reproduce

Submit form in reproduction link，and view the output error