This PR adds framework support for the Look Up feature in iOS. 

https://github.com/flutter/flutter/assets/36148254/d301df79-4e23-454f-8742-2f8e39c2960c

The corresponding merged engine PR can be found [here](https://github.com/flutter/engine/pull/43308).
This PR addresses https://github.com/flutter/flutter/issues/82907 
More details are available in this [design doc.](flutter.dev/go/add-missing-features-to-selection-controls)

This is the same PR as https://github.com/flutter/flutter/pull/130532, this is an attempt to fix the Google Testing issue