[jdk11u-dev] RFR: 8288415: java/awt/PopupMenu/PopupMenuLocation.java is unstable in MacOS machines

[Goetz Lindenmaier]

I backport this for parity with 11.0.20-oracle.

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Commit messages:
 - Backport a2f67660f088559ce49f73da7401801fb826028b

Changes: https://git.openjdk.org/jdk11u-dev/pull/2210/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2210&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288415
  Stats: 60 lines in 1 file changed: 36 ins; 3 del; 21 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2210.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2210/head:pull/2210

PR: https://git.openjdk.org/jdk11u-dev/pull/2210