RFR: 8306652: Open source AWT MenuItem related tests

[Abhishek Kumar]

This PR is to open source MenuItem AWT tests.

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Commit messages:
 - Open source MenuItem AWT tests

Changes: https://git.openjdk.org/jdk/pull/13589/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13589&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306652
  Stats: 323 lines in 4 files changed: 323 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13589.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13589/head:pull/13589

PR: https://git.openjdk.org/jdk/pull/13589