RFR: 8368219: Skip MenuDoubleShortcutTest on macOS & Linux

[Kevin Rushforth]

On Mon, 22 Sep 2025 06:48:38 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

> MenuDoubleShortcutTest > nonMacMenuBarComesBeforeScene()/macSceneComesBeforeMenuBar() was failing intermittently and it was made more robust under [JDK-8364405](https://bugs.openjdk.org/browse/JDK-8364405) and it was verified with multiple runs and it was passing.
> 
> But looks like we still see this test failing in our CI. We need to skip this test and test fix will be worked upon under [JDK-8368074](https://bugs.openjdk.org/browse/JDK-8368074)

Since this is a simple addition to skip failing tests, no need to wait 24 hours.

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PR Comment: https://git.openjdk.org/jfx/pull/1916#issuecomment-3318814413