8318841: macOS: Memory leak with MenuItem when Menu.useSystemMenuBar(true) is used
------------- Commit messages: - Backport 8dd3c37cae3dd52dc3a258033d0e8f168ceaf307 Changes: https://git.openjdk.org/jfx21u/pull/65/files Webrev: https://webrevs.openjdk.org/?repo=jfx21u&pr=65&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8318841 Stats: 80 lines in 4 files changed: 80 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jfx21u/pull/65.diff Fetch: git fetch https://git.openjdk.org/jfx21u.git pull/65/head:pull/65 PR: https://git.openjdk.org/jfx21u/pull/65
