RFR: 8303478: DatePicker throws uncatchable exception on tab out from garbled text [v4]

[brunesto]

> The fix prevents the DatePicker from losing focus if the date is not parsable.

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

  inlined

-------------

Changes:
  - all: https://git.openjdk.org/jfx/pull/1274/files
  - new: https://git.openjdk.org/jfx/pull/1274/files/decc7226..8bbdacc6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1274&range=03
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1274&range=02-03

  Stats: 14 lines in 1 file changed: 4 ins; 9 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1274.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1274/head:pull/1274

PR: https://git.openjdk.org/jfx/pull/1274