RFR: 8370120: Make jpackage tests output more stable

[Alexey Semenyuk]

On Fri, 17 Oct 2025 17:20:01 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

> - Make jpackage tests output more stable.
>  - Make jpackage output more stable.
>  - Add more action to the script derandomizing jpackage test logs.

@sashamatveev PTAL

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PR Comment: https://git.openjdk.org/jdk/pull/27870#issuecomment-3416775779