RFR: 8276167: VirtualFlow.scrollToTop doesn't scroll to the top of the last element [v3]

[eduardsdv]

On Mon, 6 Dec 2021 14:58:52 GMT, eduardsdv <duke at openjdk.java.net> wrote:

>> Fix VirtualFlow.scrollToTop(int) doesn't scroll to the top of the last element but to the bottom of the last element.
>
> eduardsdv has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8276170: Add junit for VirtualFlow.scrollToTop(int)

I added a junit which fails without patch and succeeds with it.

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PR: https://git.openjdk.java.net/jfx/pull/656