[jdk11u-dev] RFR: 8307130: Open source few Swing JMenu tests

[Amos Shi]

Backport of [JDK-8307130](https://bugs.openjdk.org/browse/JDK-8307130)
- Clean Backport
- Test Succeeded in local Dev Apple M1 Laptop

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Commit messages:
 - Backport d9052b946682d1c0f2629455d73fe4e6b95b29db

Changes: https://git.openjdk.org/jdk11u-dev/pull/2370/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2370&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307130
  Stats: 293 lines in 4 files changed: 293 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2370.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2370/head:pull/2370

PR: https://git.openjdk.org/jdk11u-dev/pull/2370