RFR: 8273657 : TextField: all text content must be selected initially

[Andy Goryachev]

On Thu, 25 Apr 2024 14:26:06 GMT, Karthik P K <kpk at openjdk.org> wrote:

> The text was not getting selected on adding the `TextField` to the scene initially, subsequently removing and adding the `TextField` to the scene selects the entire text present in the `TextField`. 
> 
> Made changes in the `TextFieldBehavior` constructor to select the text on adding the `TextField`.
> 
> Added unit test to validate the fix

the fix looks good.

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Marked as reviewed by angorya (Reviewer).

PR Review: https://git.openjdk.org/jfx/pull/1446#pullrequestreview-2023008742