RFR: 8319147: Add regression test for JDK-8317836 [v2]

[Andy Goryachev]

On Mon, 6 Nov 2023 06:06:35 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> A manual regression test for JFXPanel orientation fix in [JDK-8317836](https://bugs.openjdk.org/browse/JDK-8317836) is added
>
> Prasanta Sadhukhan has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Formatting
>  - Modify window size

I was waiting for changes to set the window position, but can re-approve if necessary.

A side comment: the arrangement of the test instruction window (as well as the creating the said window) should be a convenience method somewhere in common test units, should it not?

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Marked as reviewed by angorya (Reviewer).

PR Review: https://git.openjdk.org/jfx/pull/1276#pullrequestreview-1715940121