RFR: 8293615: Create release notes for JavaFX 19

Mon Sep 12 12:21:00 UTC 2022

On Mon, 12 Sep 2022 09:10:25 GMT, Johan Vos <jvos at openjdk.org> wrote:

> Create the release notes for JavaFX 19

doc-files/release-notes-19.md line 23:

> 21: Issue key|Summary|Subcomponent
> 22: ---------|-------|------------
> 23: [JDK-8290331](https://bugs.openjdk.java.net/browse/JDK-8290331)|Binding value left null when immediately revalidated in invalidation listener|base

Should this be included? It was basically introduced in 19 and fixed in 19 (introduced by [JDK-8274771](https://bugs.openjdk.java.net/browse/JDK-8274771)|Map, FlatMap and OrElse fluent bindings for ObservableValue|base)

doc-files/release-notes-19.md line 24:

> 22: ---------|-------|------------
> 23: [JDK-8290331](https://bugs.openjdk.java.net/browse/JDK-8290331)|Binding value left null when immediately revalidated in invalidation listener|base
> 24: [JDK-8290393](https://bugs.openjdk.java.net/browse/JDK-8290393)|Code sample in javadoc of ObservableValue flatMap is incorrect|base

Same for this one, introduced in 19 and fixed in 19.

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PR: https://git.openjdk.org/jfx/pull/896