Merge "Revert "Use the LockscreenStackBounds during transition LS -> Shade"" into main

private fun TransitionState.isOnLockscreen(): Boolean {

    return currentScene == Scenes.Lockscreen && currentOverlays.isEmpty()

}

private fun shouldUseLockscreenStackBounds(state: TransitionState): Boolean {

    return when (state) {

        is TransitionState.Idle -> state.isOnLockscreen()

        is TransitionState.Transition ->

            // Keep using the lockscreen stack bounds when transitioning from lockscreen

            // to other states for visual consistency, eg. the smart space should be visible.

            state.isTransitioning(from = Scenes.Lockscreen)

            // Keep using the lockscreen stack bounds when there is no placeholder on the next content

            state.fromContent == Scenes.Lockscreen && state.toContent != Scenes.Shade

                || state.isTransitioningBetween(content = Scenes.Lockscreen, other = Overlays.Bouncer)

    }

}