[jdk21u-dev] RFR: 8342541: Exclude List/KeyEventsTest/KeyEventsTest.java from running on macOS

[Goetz Lindenmaier]

I backport this for parity with 21.0.7-oracle.

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Commit messages:
 - Backport bb7a8403ba1b32b2d97c0bd3ec78dac1832f5289

Changes: https://git.openjdk.org/jdk21u-dev/pull/1266/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1266&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342541
  Stats: 29 lines in 1 file changed: 11 ins; 17 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1266.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1266/head:pull/1266

PR: https://git.openjdk.org/jdk21u-dev/pull/1266