RFR: 8361521 : BogusFocusableWindowState.java fails with StackOverflowError on Linux

[Alisen Chung]

On Mon, 14 Jul 2025 17:00:35 GMT, Anass Baya <abaya at openjdk.org> wrote:

> **Analysis:**
> The getFocusableWindowState() method is not intended to modify the configuration; doing so can cause recursive re-entry on Linux.
> 
> **Proposed Fix:**
> We are intentionally overriding getFocusableWindowState() to allow it to change the configuration, in order to verify that calling getScreenImOn() for ownerless windows does not throw any exceptions.
> To prevent recursive re-entry, we use a flag to ensure that getFocusableWindowState() is executed only once

After this test fix does the test fail if you undo [JDK-8346952](https://github.com/openjdk/jdk/pull/25619)?

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PR Review: https://git.openjdk.org/jdk/pull/26298#pullrequestreview-3017923468