fix(table): fix table sticky-header failure with scrollbar

[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

Table设置了 scrollbar 虚拟滚动条时吸顶样式被挂在了虚拟滚动条 container 上而非表格头最外层，导致吸顶失效。

Solution

区分div 和 Scrollbar 包裹两种情况下的样式设置

 ⚠️ renderVirtualListBody 函数不知道为什么留下（改造的时候忘记删除了? 🤔），看来一下并未在任何地方使用就移除了。

iShot_2024-06-04_19.50.51.mp4

How is the change tested?

Changelog

Component	Changelog(CN)	Changelog(EN)	Related issues
Table	修复虚拟滚动条开启时 sticky-header 吸顶失效	fix table sticky-header failure with scrollbar	Closed #2728, Closed #2411, Closed #1852

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

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[flsion]

@oljc renderVirtualListBody 是历史遗留的代码了，这里改造过。