[ListView] Smooth Scrolling + Frequent invoke `Scrollable.setScrollPosition` will cause small misposition of the actual `scrollPosition`

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Describe the bug

1. When using mousepad scroll the ListView, or simply using scrollOnEdge to scroll the ListView might cause the incorrect setScrollPosition.

To Reproduce
As the following shown, the blinking line indicates where the actual scroll position (top in pixel) stays, which frequently vibrates to some extent.

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Also, I found out VSCode has a more smooth dragOnEdge animation than us, this should also be tracked.