RFR: 8337246: SpinnerSkin does not consume ENTER KeyEvent when editor ActionEvent is consumed [v2]

[John Hendrikx]

> This is a proof of concept fix for the linked issue.
> 
> We'll need to discuss if using an event filter in the Behavior is the appropriate fix and how much impact this may have on current applications.

John Hendrikx has updated the pull request incrementally with one additional commit since the last revision:

  Change default button tests to use non-editable spinner

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1629/files
  - new: https://git.openjdk.org/jfx/pull/1629/files/afef5153..4e6dafca

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1629&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1629&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1629.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1629/head:pull/1629

PR: https://git.openjdk.org/jfx/pull/1629