RFR: 8274137: TableView scrollbar/header misaligned when reloading data [v3]

[Ajit Ghaisas]

On Mon, 27 Sep 2021 05:27:25 GMT, Robert Lichtenberger <rlichten at openjdk.org> wrote:

>> This PR fixes JDK-8274137 by removing the optimization from updateHbar() that will no-op the method in case the VirtualFlow is invisible or currently has no scene.
>> Since changes to the hBar's value can happen even if the VirtualFlow is not currently visible, the synchronisation between hBar and clipX must happen all the time.
>> 
>> A test agains VirtualFlow has been added that will fail before the change and pass afterwards.
>
> Robert Lichtenberger has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8274137: TableView scrollbar/header misaligned when reloading data
>   
>   Remove @Override annotations unrelated to fix.

Marked as reviewed by aghaisas (Reviewer).

Fix is fine!

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PR: https://git.openjdk.java.net/jfx/pull/629