[jdk21u-dev] RFR: 8315663: Open source misc awt tests

[Andrew Lu]

I backport this for parity with 21.0.3-oracle.

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Commit messages:
 - Backport a36f5a54ab4871739f2ccbabb684942fc3cadf20

Changes: https://git.openjdk.org/jdk21u-dev/pull/380/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=380&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315663
  Stats: 263 lines in 3 files changed: 263 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/380.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/380/head:pull/380

PR: https://git.openjdk.org/jdk21u-dev/pull/380