RFR: 8347715: RichTextArea Follow-up: Minor Bugs [v2]

[Kevin Rushforth]

On Tue, 14 Jan 2025 16:10:00 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> Found during writing the API tests:
>> 
>> - setUseContentHeight/Width (true -> on)
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   revert nullable change

LGTM.

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Marked as reviewed by kcr (Lead).

PR Review: https://git.openjdk.org/jfx/pull/1676#pullrequestreview-2550239752