RFR: 8370498: Improve how Node detects whether a layout property change requires a new layout pass

[John Hendrikx]

On Thu, 23 Oct 2025 13:28:44 GMT, John Hendrikx <jhendrikx at openjdk.org> wrote:

> This new check is much more accurate to detect whether a parent is currently laying out its children. The previous code almost never worked, resulting in additional unnecessary layouts.

It looks like there is one failing test for ToolBarSkin.  Likely there is something relying on the superfluous 2nd layout.  I'm looking into it.

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PR Comment: https://git.openjdk.org/jfx/pull/1945#issuecomment-3437125900