fix: carousel's pauseOnDotsHover not work

[snowtreetree]

This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Branch merge
• Other (about what?)

What's the background?

1. Use Carousel, set autoplay, autoplaySpeed, pauseOnDotsHover.
2. Hover on dots, it doesn't work.

API Realization (Optional if not new feature)

1. show file changes.

What's the effect? (Optional if not new feature)

1. Does this PR affect user? Which part will be affected?
2. What will say in changelog?
3. Does this PR contains potential break change or other risk?

Changelog description (Optional if not new feature)

1. fix Carousel's prop of pauseOnDotsHover not work.
2. 修复Carousel组件pauseOnDotsHover失效问题。

Self Check before Merge

• 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

[ajuner]

确认一下吧，试了一下pauseOnDotsHover是生效的

[snowtreetree]

https://codesandbox.io/s/adoring-butterfly-1jxji?file=/src/App.vue
@ajuner

[snowtreetree]

2021-01-12.11.39.31.mov

[ajuner]

你这个demo是1.x版本的吧。。

[snowtreetree]

https://codesandbox.io/s/nostalgic-water-juux5?file=/src/main.js
这个是2.0.0-rc.6版本的，你这边确认的时候是用的什么版本，😂。

[ajuner]

https://codesandbox.io/s/pensive-nash-56xzn?file=/src/App.vue
神奇的问题，我这个是能停住的

[snowtreetree]

@ajuner 好像单独用是可以的，再在外面多加一层就不行了。

[tangjinzhou]

I think we can delete onMouseenter event.

[snowtreetree]

确实，这块onMouseover和onMouseenter处理情况有重复的地方。

[snowtreetree]

pauseOnHover 相关的 onMouseenter应该也可以删除，😂 。

[tangjinzhou]

删掉那一行应该没什么问题

[github-actions]

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