fix(date-picker): fix invalid date due to mismatch between date and format

[oljc]

Types of changes

• New feature
• Bug fix
• Enhancement
• Component style change
• Typescript definition change
• Documentation change
• Coding style change
• Refactoring
• Test cases
• Continuous integration
• Breaking change
• Others

Background and context

问题：日期选择器中当传入的值与format不一致的时候会出现Invalid Date 导致组件无法正常运作。
由于范围选择器就算不设置 format 但开启 showTime 时内部会默认给YYYY-MM-DD HH:mm:ss 所以表现尤为明显

原因：
追溯到全局组件通用date.ts函数文件中
dayjs扩展的 customParseFormat 插件使用条件如它文档第一句也就是传入的字符串格式需要和 format 尽可能一致（特性bug👀）
官网表现如图：
https://day.js.org/docs/zh-CN/parse/string-format

Solution

添加了有效日期校验 不满足时返回正常对象，进行输出兜底以保证组件正常运作。

How is the change tested?

Changelog

Component	Changelog(CN)	Changelog(EN)	Related issues
date-picker	修复日期与format不一致导致出现无效日期	fix invalid date due to mismatch between date and format

Checklist:

• Test suite passes (npm run test)
• Provide changelog for relevant changes (e.g. bug fixes and new features) if applicable.
• Changes are submitted to the appropriate branch (e.g. features should be submitted to feature branch and others
  should be submitted to main branch)

Other information