RFR: 8343336: Add persistentScrollBars preference [v2]

[Michael Strauß]

On Fri, 1 Nov 2024 13:51:19 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Change reducedScrollBars to persistentScrollBars
>
> modules/javafx.graphics/src/main/java/javafx/application/Platform.java line 599:
> 
>> 597:          * @since 24
>> 598:          */
>> 599:         ReadOnlyBooleanProperty persistentScrollBarsProperty();
> 
> Do you also plan to add new platform-specific preferences or do you think this is unnecessary?

I added the respective platform-specific keys to the `Preferences` documentation.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1618#discussion_r1826117375