RFR: 8328562: Convert java/awt/InputMethods/DiacriticsTest/DiacriticsTest.java applet test to main [v2]

[Phil Race]

On Thu, 21 Mar 2024 11:37:36 GMT, Alexander Zvegintsev <azvegint at openjdk.org> wrote:

>> Test converted to main.
>> Instructions split to Windows and Linux, with some clarifications.
>> The test runs successfully on Windows and Linux.
>
> Alexander Zvegintsev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   minor spacing

This test looks to be a good example why we should be considering a new jtreg key like
@key keyboard
or
@key locale

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Marked as reviewed by prr (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18388#pullrequestreview-1956450230