RFR: 8353655: Clean up and open source KeyEvent related tests (Part 1) [v2]

[Abhishek Kumar]

On Tue, 15 Apr 2025 18:29:12 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

>> Clean up and open source three tests related to the KeyEvent mechanics.
>
> Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Small fixes based on review comments

LGTM

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Marked as reviewed by abhiscxk (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24609#pullrequestreview-2771046469