fix: keep validateInfos reactive

[ylc395]

This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Branch merge
• Other (about what?)

What's the background?

validateInfos will be initialized only once. If rulesRef's value is updated, validateInfos just keep the same key as before, so validateInfos[name].validateStatus will throw a error(TypeError: Cannot set property 'validateStatus' of undefined).

fix #4498

Self Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[ylc395]

@tangjinzhou 能帮忙 review 下么，有问题随时沟通

[tangjinzhou]

看下这个 c6c004c

[tangjinzhou]

你不能更改 validateInfos 为新的响应式对象， 这样用户侧会丢失响应式

[ylc395]

你不能更改 validateInfos 为新的响应式对象， 这样用户侧会丢失响应式

原 PR 中哪一步会更改为新的响应式对象？应该只会在一开始的时候有一个初始化对象的

[tangjinzhou]

oo https://github.com/vueComponent/ant-design-vue/pull/4557/files#diff-0f4204076c7328f2713947751d399431de7d0f35ee1ab3ef7d5448addacf6484R137 看错了 ，136行的判断漏掉了 没有保留原校验状态，其它没有大问题

[github-actions]

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