RFR: 8306996: Open source Swing MenuItem related tests [v3]

[Abhishek Kumar]

> This PR is to open source JMenuItem related swing tests.

Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:

  Shift and Control mask modified

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13822/files
  - new: https://git.openjdk.org/jdk/pull/13822/files/172ae128..2db3db78

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13822&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13822&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/13822.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13822/head:pull/13822

PR: https://git.openjdk.org/jdk/pull/13822