RFR: 8157173: [macosx] java/awt/Robot/ModifierRobotKey/ModifierRobotKeyTest.java fails

Mon Nov 14 00:18:02 UTC 2022

This test currently passing as it is on all platforms, but it was problemlisted with ["Problem List some tests that leave windows open on the desktop" reason](https://github.com/openjdk/jdk/commit/fd8df3adf13f5df8f5f95482b8e0a70bc519f39f)

So this test is cleaned up and stabilized.

CI testing looks good.

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Commit messages:
 - initial

Changes: https://git.openjdk.org/jdk/pull/11128/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11128&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8157173
  Stats: 170 lines in 2 files changed: 52 ins; 45 del; 73 mod
  Patch: https://git.openjdk.org/jdk/pull/11128.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11128/head:pull/11128

PR: https://git.openjdk.org/jdk/pull/11128