[jdk17u-dev] RFR: 8352678: Opensource few JMenuItem tests

[Satyen Subramaniam]

Backporting JDK-8352678: Opensource few JMenuItem tests and JDK-8357305: Compilation failure in javax/swing/JMenuItem/bug6197830.java (caused by first JBS issue). Renames a test file, and open sources 4 tests. Ran GHA Sanity Checks and new tests directly.

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Commit messages:
 - Backport a94d1a04076c64f983e508c4da2e59a8aab5e4c5
 - Backport 8a40498d79a18dcf91cf4979d34c3583a6c39322

Changes: https://git.openjdk.org/jdk17u-dev/pull/4049/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4049&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8352678
  Stats: 739 lines in 7 files changed: 553 ins; 186 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4049.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4049/head:pull/4049

PR: https://git.openjdk.org/jdk17u-dev/pull/4049