[jdk21u-dev] RFR: 8339984: Open source AWT MenuItem related tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

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Commit messages:
 - Backport f4e401791efb920b9773f2886b34904c95106727

Changes: https://git.openjdk.org/jdk21u-dev/pull/1479/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1479&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339984
  Stats: 468 lines in 5 files changed: 468 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1479.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1479/head:pull/1479

PR: https://git.openjdk.org/jdk21u-dev/pull/1479