RFR: 8340809: Open source few more AWT PopupMenu tests

[Abhishek Kumar]

Few more AWT PopupMenu tests converted to either manual or automated and open sourced.

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Commit messages:
 - Popup menu tests moved to open

Changes: https://git.openjdk.org/jdk/pull/21412/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21412&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340809
  Stats: 680 lines in 5 files changed: 680 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21412.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21412/head:pull/21412

PR: https://git.openjdk.org/jdk/pull/21412