feat(useInfiniteScroll): support scroll to top

[jaluik]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• 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

💡 Background and solution

In many scenarios, users need to load more content when they scroll up, especially in chat applications and feeds. The current useInfiniteScroll hook in ahooks only supports loading more when scrolling down. To meet this requirement, I have extended useInfiniteScroll to support upwards infinite scrolling.

Solution:

• Added an option direction: top to useInfiniteScroll to enable upward scrolling.
• Modified the internal logic to handle upward scroll events and load more data accordingly.
• Ensured backward compatibility with existing downward scrolling functionality.

📝 Changelog

Language	Changelog
🇺🇸 English	Added direction option to useInfiniteScroll hook to enable upward scrolling.
🇨🇳 Chinese	给 useInfiniteScroll 增加了direction选项提供向上滚动加载的支持。

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• 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

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ jaluik
✅ hchlq
❌ crazylxr
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[hchlq]

补一下单侧哈

[jaluik]

补一下单侧哈

ok

[jaluik]

补一下单侧哈

单测加好了 @hchlq

[jaluik]

@liuyib @hchlq 有人review一下代码吗