[jdk21u-dev] RFR: 8316240: Open source several add/remove MenuBar manual tests

[Andrew Lu]

I backport this for parity with 21.0.5-oracle.

-------------

Commit messages:
 - Backport 3809d69ac4b3d186ccdc336949b658e4671347c8

Changes: https://git.openjdk.org/jdk21u-dev/pull/691/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=691&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316240
  Stats: 514 lines in 4 files changed: 514 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/691.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/691/head:pull/691

PR: https://git.openjdk.org/jdk21u-dev/pull/691