RFR: 8354554: Open source several clipboard tests batch1 [v3]

[Sergey Bylokhov]

On Wed, 23 Apr 2025 22:25:19 GMT, Alexander Zvegintsev <azvegint at openjdk.org> wrote:

>> few more clipboard tests are opensourced. Some of them are in problemlist.
>
> Alexander Zvegintsev has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - remove ProcessTools.executeTestJava();
>  - add process.destroyForcibly();

Marked as reviewed by serb (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk/pull/24806#pullrequestreview-2788805635