fix(overflow-list): dynamic elements overflow invalid

[hehehai]

Types of changes

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

Background and context

Solution

How is the change tested?

Changelog

Type	Component	Changelog(CN)	Changelog(EN)	Related issues
docs	OverflowList	使用案例	add demo	-
fix	OverflowList	修复动态元素自动显隐异常	Fix automatic explicit and hidden exceptions of dynamic elements	#1686

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

TODO

• [ ] gap 替代 margin 作为间隔属性名称