RFR: 8361298: SwingUtilities/bug4967768.java fails where character P is not underline [v2]

[Tejesh R]

On Thu, 31 Jul 2025 07:28:36 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

>> For Windows and GTK L&F, mnemonic is visible when ALT key is pressed.
>> Test instruction updated to reflect the desired behaviour .
>
> Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   minor text instruction update

If I am right, the main bug is about underline drawing and not about mnemonic. Yet mnemonic is used to check underline drawing under the string, I guess you can think of using the code mentioned in [JDK-4967768](https://bugs.openjdk.org/browse/JDK-4967768) in the test which would be fine for all L&F.

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PR Review: https://git.openjdk.org/jdk/pull/26546#pullrequestreview-3075514372