RFR: 8337320: Update ProblemList.txt with tests known to fail on XWayland

[Phil Race]

On Tue, 30 Jul 2024 03:48:08 GMT, Alexander Zvegintsev <azvegint at openjdk.org> wrote:

> Adding tests failing on XWayland.
> 
> The `java/awt/Focus/VetoableChangeListenerLoopTest.java` mentioned in the bug description no longer fails.

Marked as reviewed by prr (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20384#pullrequestreview-2210911831