[Feature Request]Form 表单验证支持自定义组件和原生标签

[xvvhang]

What problem does this feature solve?

Form 中存在自定义组件或原生标签时，Form 表单验证对该项内容无效。

What does the proposed API look like?

Form 表单验证支持自定义组件或原生标签

例子：https://run.iviewui.com/6WoqqdbB