RFR: 8306996: Open source Swing MenuItem related tests [v2]

[Damon Nguyen]

On Mon, 8 May 2023 09:33:40 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

>> This PR is to open source JMenuItem related swing tests.
>
> Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review comment update

Marked as reviewed by dnguyen (Committer).

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PR Review: https://git.openjdk.org/jdk/pull/13822#pullrequestreview-1417112202