RFR: 8351867: No UI changes while iconified [v3]

[Martin Fox]

On Wed, 18 Jun 2025 15:36:23 GMT, Lukasz Kostyra <lkostyra at openjdk.org> wrote:

> I have noticed the tests for maximized stages fail on my system:

That's expected. This PR fixes the case where the window goes from iconified to restored. When looking at the code I realized the same fix needs to be applied when the window goes from iconified to maximized so I added that to the test.

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PR Comment: https://git.openjdk.org/jfx/pull/1733#issuecomment-2985608651