RFR: 8327478: Add System test to verify TextSelection issue for webkit-617.1 [v3]

[Kevin Rushforth]

On Tue, 4 Mar 2025 20:39:18 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> `Robot::getPixelColor` can't return null (although I checked the docs and we don't specify one way or the other). It seems fine either way.
>
> what if the lambdas never run?

Then we have far bigger problems than this one test. The reason we use `runAndWait` instead of `runLater` is so we guarantee that the lambda has run before that method returns. It's guaranteed to do so.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1719#discussion_r1980471260