[SuperEditor][SuperReader][SuperTextField] - Reports wrong focal point to floating toolbar when double tapping to select word

[matthew-carroll]

When double tapping to select a word on iOS, the focal point is reported as the initial caret offset, rather than the center of the selection rectangle.

I found this problem in Super Editor, but Super Reader and Super Text Field should be checked, too.

I found this problem on iOS, but Android should be checked, too.

https://github.com/user-attachments/assets/e87b8b7e-b326-4fa3-8e2f-10be3fc39ae7