RFR: 8370446: Support dialogs with StageStyle.EXTENDED

[Cormac Redmond]

On Fri, 24 Oct 2025 01:40:59 GMT, Cormac Redmond <duke at openjdk.org> wrote:

> Hi. Another bug, a slightly more serious one this time.
> 
> Dialogs cannot be re-used. E.g., sequentially calling showAndWait() twice on the same instance, does not work:
> ...
> ```

Hi @mstr2: any thoughts on this one (in particular)? Seems like a bug...

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PR Comment: https://git.openjdk.org/jfx/pull/1943#issuecomment-3460811167