STL: Removed DuringTransitionBetweenScenes from NestedScrollBehavior

After refactoring ag/28322124 this behavior is no longer needed.
There are no use case and it can be implemented in the scene using a
nestedScroll() modifier that consumes all the excess scroll.

Test: atest NestedScrollToSceneTest
Bug: 336710600
Flag: com.android.systemui.scene_container
Change-Id: I89e61778aa18ceeb3a99abb33596b7406a33572d