[jdk17u-dev] RFR: 8284014: Menu items with submenus in JPopupMenu are not spoken on macOS

[Goetz Lindenmaier]

I backport this for parity with 17.0.5-oracle.

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Commit messages:
 - Backport e18414a322f0814c120bcdd415ebd7bd34949633

Changes: https://git.openjdk.org/jdk17u-dev/pull/553/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=553&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284014
  Stats: 111 lines in 3 files changed: 106 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/553.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/553/head:pull/553

PR: https://git.openjdk.org/jdk17u-dev/pull/553