RFR: 8353589: Open source a few Swing menu-related tests

[Phil Race]

Open source a few tests related to Swing menus.

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Commit messages:
 - 8353589

Changes: https://git.openjdk.org/jdk/pull/24457/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24457&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353589
  Stats: 297 lines in 3 files changed: 297 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24457.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24457/head:pull/24457

PR: https://git.openjdk.org/jdk/pull/24457