RFR: 8341298: Open source more AWT window tests

[Jayathirth D V]

Clean up and open source more of the AWT window tests.

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Commit messages:
 - 8341298: Open source more AWT window tests

Changes: https://git.openjdk.org/jdk/pull/21348/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21348&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341298
  Stats: 616 lines in 4 files changed: 616 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21348.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21348/head:pull/21348

PR: https://git.openjdk.org/jdk/pull/21348