ListWheelScrollView

PageView

NestedScrollView

Since these widgets manually override the inherited ScrollBehavior
to remove Scrollbars, all of these widgets now have a scrollBehavior
parameter so that one can be provided to use instead of the override.

This change did not cause any test failures, crashes, or error messages
in the course of development, but it may result in two Scrollbars
being rendered in your application if you are manually adding Scrollbars
on desktop platforms.

If you are seeing this in your application, there are several ways to
control and configure this feature.

Remove the manually applied Scrollbars in your application when running on desktop.

Extend ScrollBehavior, MaterialScrollBehavior, or CupertinoScrollBehavior
to modify the default behavior.