delay property
The delay between when a pointer touched the child and when the drag is initiated.
If the Handle wraps the whole item, the delay should be greater
than the default Duration.zero
as otherwise the list might become unscrollable.
When the ImplicitlyAnimatedReorderableList was scrolled in the mean time,
the reorder will be canceled.
If the ImplicitlyAnimatedReorderableList uses a NeverScrollableScrollPhysics
the Handle will instead use a parent Scrollable
if there is one.
Implementation
final Duration delay;