RFR: 8315701: [macos] Regression: KeyEvent has different keycode on different keyboard layouts [v2]

[Alisen Chung]

> Updated previous fix (8262945) to work on extendedKeyCodes. Updated AcceleratorTest to use PassFailJFrame instead of Applet

Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:

  updated test to provide information on which key was pressed

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16664/files
  - new: https://git.openjdk.org/jdk/pull/16664/files/00e6daef..f52f4b11

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16664&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16664&range=00-01

  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/16664.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16664/head:pull/16664

PR: https://git.openjdk.org/jdk/pull/16664