RFR: 8273578: javax/swing/JMenu/4515762/bug4515762.java fails on macOS 12 [v2]

[Prasanta Sadhukhan]

> The test sometimes fail on macos12 citing "Action has not been received". Seems like some key events sometimes are not received reliably. 
> Proposed fix is to apply mach5 stability fixes which is to set autodelay to 100ms, move frame to center of screen from top-left, added extra waitForIdle(), wait for 1 sec after frame is made visible.
> Additionally, it is seen that it mixes Util.hitKeys and robot.keyPress/Release. Changed to make it use robot.keyPress/keyRelease all times. Also, updated test to have specific error message for specific keyevent so that we know which keyevent is not received in case it fails again.
> 
> Run on mac12 and all other platforms multiple times and test run is green. Link in JBS.

Prasanta Sadhukhan has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Problemlist update
 - Merge branch 'master' of https://git.openjdk.java.net/jdk into JDK-8273578
 - 8273578: javax/swing/JMenu/4515762/bug4515762.java fails on macOS 12

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5564/files
  - new: https://git.openjdk.java.net/jdk/pull/5564/files/ff8796ce..23c57e06

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5564&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5564&range=00-01

  Stats: 20445 lines in 515 files changed: 14665 ins; 2582 del; 3198 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5564.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5564/head:pull/5564

PR: https://git.openjdk.java.net/jdk/pull/5564