RFR: 8352905: Open some JComboBox bugs 1

[Sergey Bylokhov]

On Mon, 7 Apr 2025 22:50:14 GMT, Alisen Chung <achung at openjdk.org> wrote:

> Updating and opening some tests

test/jdk/javax/swing/JComboBox/bug4166593.java line 65:

> 63:         }
> 64: 
> 65:         if (frame != null) {

frame is initialized on a different thread and accessed here without proper synchronization.

same issue with numberOfActionEvents

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PR Review Comment: https://git.openjdk.org/jdk/pull/24495#discussion_r2038756353