animate
Attempt to animate using decay Animation to a targetValue. If the velocity is high enough to get to the target offset, we'll use UnstyledAnchoredDraggableState.decayAnimationSpec to get to that offset and return the consumed velocity. If the velocity is not high enough, we'll use UnstyledAnchoredDraggableState.snapAnimationSpec to reach the target offset.
If the targetValue is not in the set of anchors, UnstyledAnchoredDraggableState.currentValue will be updated ro the targetValue without updating the offset.
Return
The velocity consumed in the animation
Parameters
The target value of the animation
The velocity the animation should start with
Throws
if the interaction interrupted bt another interaction like a gesture interaction or another programmatic interaction like animateTo or snapTo call.