[jdk21u-dev] RFR: 8337320: Update ProblemList.txt with tests known to fail on XWayland

[Andrew Lu]

I backport this for parity with 21.0.5-oracle.

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Commit messages:
 - Backport ddbd7a78f191462695ecbeeef7fd6312e322b15a

Changes: https://git.openjdk.org/jdk21u-dev/pull/961/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=961&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8337320
  Stats: 6 lines in 1 file changed: 6 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/961.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/961/head:pull/961

PR: https://git.openjdk.org/jdk21u-dev/pull/961