RFR: 8354928: Clean up and open source some miscellaneous AWT tests [v2]

[Alexander Zuev]

> Clean up and open source some tests related to event processing in AWT library.

Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:

  Update test/jdk/java/awt/event/MouseWheelEvent/HWWheelScroll.java
  
  Co-authored-by: DamonGuy <damon.nguyen at oracle.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24755/files
  - new: https://git.openjdk.org/jdk/pull/24755/files/3fc9e0db..1ae50494

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24755&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24755&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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