RFR: 8339639: Opensource few AWT PopupMenu tests

[Prasanta Sadhukhan]

OPensource few AWT PopupMenu tests

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Commit messages:
 - 8339639: Opensource few AWT PopupMenu tests

Changes: https://git.openjdk.org/jdk/pull/20982/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20982&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339639
  Stats: 360 lines in 3 files changed: 360 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20982.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20982/head:pull/20982

PR: https://git.openjdk.org/jdk/pull/20982