Merge "Compute transformations when transitions start" into main

...m/android/compose/animation/scene/AnimateSharedAsState.kt

...src/com/android/compose/animation/scene/AnimateToScene.kt

.../scene/src/com/android/compose/animation/scene/Element.kt

...src/com/android/compose/animation/scene/MovableElement.kt

...om/android/compose/animation/scene/NestedScrollToScene.kt

...om/android/compose/animation/scene/SceneGestureHandler.kt

.../android/compose/animation/scene/SceneTransitionLayout.kt

...roid/compose/animation/scene/SceneTransitionLayoutImpl.kt

...oid/compose/animation/scene/SceneTransitionLayoutState.kt

...c/com/android/compose/animation/scene/SceneTransitions.kt

...e/src/com/android/compose/animation/scene/SwipeToScene.kt

.../com/android/compose/animation/scene/TransitionDslImpl.kt

.../compose/animation/scene/transformation/Transformation.kt

...ndroid/compose/animation/scene/SceneGestureHandlerTest.kt

...compose/animation/scene/SceneTransitionLayoutStateTest.kt

.../com/android/compose/animation/scene/TransitionDslTest.kt