OverscrollSpec could be used from TransitionState.Idle state

To ensure consistency, we continue to use the same definitions for
scenes with OverscrollSpec, even when the scene is in Idle state.

Test: atest SceneGestureHandlerTest
Test: atest ElementTest
Bug: 291053278
Flag: NA
Change-Id: Ie6babb06b2fd2bcf202e85c3baf78f261594a64d
3 files changed