[jdk21u-dev] RFR: 8340437: Open source few more AWT Frame related tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

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Commit messages:
 - Backport 9bd478593cc92a716151d1373f3426f1d92143bb

Changes: https://git.openjdk.org/jdk21u-dev/pull/1569/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1569&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340437
  Stats: 771 lines in 4 files changed: 771 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1569.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1569/head:pull/1569

PR: https://git.openjdk.org/jdk21u-dev/pull/1569