RFR: 8353488: Open some JComboBox bugs 3 [v2]

[Sergey Bylokhov]

On Mon, 21 Apr 2025 17:43:26 GMT, Alisen Chung <achung at openjdk.org> wrote:

>> Opening some JComboBox bugs
>
> Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add robot keyrelease

test/jdk/javax/swing/JComboBox/bug4248128.java line 56:

> 54:             robot.waitForIdle();
> 55: 
> 56:             if (!combo.isPopupVisible()) {

combo fields here and in the next test are accessed on non EDT.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24767#discussion_r2052939467