Move TransformationRange outside of Transformation

This CL is a small refactoring that moves TransformationRange outside of
the Transformation interface. Ranges are defined outside transformations
and not inside, so it does not make sense to have it in Transformation.

Bug: 376438969
Test: atest PlatformComposeSceneTransitionLayoutTests
Flag: com.android.systemui.scene_container
Change-Id: Ib58305cdeff11d6e4af588be7c9f74c092a89753