Allow mouseenter/mouseleave events to be disabled

[EricRabil]

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The mouseenter and mouseleave event listeners have shown some performance issues, and there's some demand for them to be toggleable as a result. This PR adds a prop for disabling these events.

There's no breaking changes – if you don't use the prop, nothing will change.

Usage:

<RecycleScroller :detectHover="false" />

This resolves #178

[AMontagu]

I had a perf issue where every time my mouse was entering or leaving an item all my visible item was updated. After some research and tests I found that removing those two event fixed it.

This PR would be appreciated.

[YoungL1107]

Sadly, This PR is not include in release

[Akryum]

Thanks for your PR! We now already have a skipHover prop. I will merge all the changes from the v1 (for Vue 2) to the Vue 3 version soon!

[lctech-bill]

Hi, Akryum: Seens document missing skipHover at Props part?

vue-virtual-scroller - Props