RFR: 8342462: TextAreaSkin: remove USE_MULTIPLE_NODES [v2]

[Kevin Rushforth]

On Mon, 21 Oct 2024 19:48:56 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> Removed "not yet fully implemented" USE_MULTIPLE_NODES and related code.
>> 
>> I would like to remove the early unfinished idea of using multiple Text nodes in TextAreaSkin to clean up the code, to make it easier to do fixes for [JDK-8342233](https://bugs.openjdk.org/browse/JDK-8342233) and [JDK-8296266](https://bugs.openjdk.org/browse/JDK-8296266).
>> 
>> Also some minor cleanup.
>> 
>> ## Summary of Changes
>> 
>> - removed USE_MULTIPLE_NODES and code paths that correspond to its `true` value
>> - permanently adding one Text node to `paragraphNodes` Group, keeping the latter for compatibility purposes
>> - removed any code that scans `paragraphNodes` children
>> - using `getTextNode()` in place of `((Text)paragraphNodes.getChildren().get(0))`
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   wrong comments

Marked as reviewed by kcr (Lead).

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

PR Review: https://git.openjdk.org/jfx/pull/1601#pullrequestreview-2383446124