[jdk21u-dev] RFR: 8339727: Open source several AWT focus tests - series 1

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

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Commit messages:
 - Backport 358ff196336407484b1b892f08936e9378701959

Changes: https://git.openjdk.org/jdk21u-dev/pull/1472/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1472&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339727
  Stats: 649 lines in 5 files changed: 649 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1472.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1472/head:pull/1472

PR: https://git.openjdk.org/jdk21u-dev/pull/1472