RFR: 8237505: RadioMenuItem in ToggleGroup: deselected on accelerator

Thu Jan 19 13:00:48 UTC 2023

No check was present in `RadioMenuItem` accelerator to see if it is in a `ToggleGroup` or not.

Made changes to check if `RadioMenuItem` is part of `ToggleGroup` or not. If it is part of a `ToggleGroup`, then it can not be cleared using accelerator.

Added test to validate the change.

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Commit messages:
 - Fix RadioMenuItem in ToggleGroup deselection on Accelerator issue

Changes: https://git.openjdk.org/jfx/pull/1002/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1002&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8237505
  Stats: 36 lines in 2 files changed: 35 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1002.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/1002/head:pull/1002

PR: https://git.openjdk.org/jfx/pull/1002