fix(useClickAway): callback shouldn't be invoked when a dynamic element inside target is clicked

[liuyib]

[中文版模板 / Chinese template]

🤔 This is a ...

• [ ] New feature
• [x] Bug fix
• [ ] Site / documentation update
• [ ] Demo update
• [ ] TypeScript definition update
• [ ] Bundle size optimization
• [ ] Performance optimization
• [ ] Enhancement feature
• [ ] Internationalization
• [ ] Refactoring
• [ ] Code style optimization
• [ ] Test Case
• [ ] Branch merge
• [ ] Other (about what?)

🔗 Related issue link

fix: https://github.com/alibaba/hooks/issues/2321

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	fix(useClickAway): callback shouldn't be invoked when a dynamic element inside target is clicked
🇨🇳 Chinese	fix(useClickAway): 点击目标元素内部的动态元素时，不应该调用回调

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

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

[liuyib]

这个 PR 的变动单测模拟不出来，按照 https://github.com/alibaba/hooks/issues/2321#issue-1892386450 的 demo，人工是可以复现出问题，并且这个 PR 确实能解决问题，但是单测里复现不了，所以就没补单测