RFR: 8191995: Regression: DatePicker must commit on focusLost

[Kevin Rushforth]

On Wed, 24 Nov 2021 09:09:53 GMT, Marius Hanl <mhanl at openjdk.org> wrote:

> This PR fixes an issue where the `DatePicker` is not committing his text as value when the focus is lost. 
> As the ticket also mentions, this is a regression which last worked on JavaFX 8 and got broken by this refactoring: [JDK-8150946](https://bugs.openjdk.java.net/browse/JDK-8150946)
> 
> The fix is to provide the same api  to the `DatePicker` which was introduced by [JDK-8150946](https://bugs.openjdk.java.net/browse/JDK-8150946) for `ComboBox` and `Spinner`.
> 
> Note: While fixing this I found a possible bug which I tracked here: [JDK-8277756](https://bugs.openjdk.java.net/browse/JDK-8277756)
> -> When creating a `DatePicker` with the second constructor (with `LocalDate` as parameter) two listener won't be added since they are only added at the first constructor (That's also why I added the focusProperty listener in the second constructor).

Looks good. I've also "Reviewed" the CSR, so it can be finalized.

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Marked as reviewed by kcr (Lead).

PR: https://git.openjdk.java.net/jfx/pull/679