RFR: 8264157: Items of non-editable ComboBox cannot be selected using up/down keys

[Kevin Rushforth]

On Tue, 4 May 2021 12:29:54 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

> This issue [JDK-8264157](https://bugs.openjdk.java.net/browse/JDK-8264157) is a regression of [JDK-8209788](https://bugs.openjdk.java.net/browse/JDK-8209788), which removed two KeyMappings from `ComboBoxListViewBehavior`. That removal was not required to fix [JDK-8209788](https://bugs.openjdk.java.net/browse/JDK-8209788).
> Reverting `ComboBoxListViewBehavior.java` fixes the regression.
> Fix includes a new test which fails before and pass with the fix.

Marked as reviewed by kcr (Lead).

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PR: https://git.openjdk.java.net/jfx/pull/485