Clean up and open source some tests related to event processing in AWT library.
------------- Commit messages: - 8354928: Clean up and open source some miscellaneous AWT tests Changes: https://git.openjdk.org/jdk/pull/24755/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24755&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8354928 Stats: 499 lines in 4 files changed: 499 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/24755.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24755/head:pull/24755 PR: https://git.openjdk.org/jdk/pull/24755
