RFR: 8236505: Mark jdk/editpad/EditPadTest.java as @headful

[Phil Race]

On Thu, 16 Sep 2021 09:13:15 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> This is a GUI test, and it should be `@headful`.
> 
> Additional testing:
>  - [x] Test still runs in default, and does not run with `!headful`

Well .. since our test framework doesn't run whatever test group this is in on headful systems, what this change has effectively done is say "don't run this test anymore. ever".
You'd need to add it to the desktop test group.

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PR: https://git.openjdk.java.net/jdk/pull/5544