[jdk21u-dev] RFR: 8335468: [XWayland] JavaFX hangs when calling java.awt.Robot.getPixelColor

[Goetz Lindenmaier]

I backport this for parity with 21.0.7-oracle

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Commit messages:
 - Backport 965aace297154ab08ee41a4d988553707cae8b32

Changes: https://git.openjdk.org/jdk21u-dev/pull/1287/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1287&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335468
  Stats: 67 lines in 6 files changed: 47 ins; 12 del; 8 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1287.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1287/head:pull/1287

PR: https://git.openjdk.org/jdk21u-dev/pull/1287