Fix list view and page view not being able to change scroll direction.

Author: BirjuVachhani

lib/src/api/nodes/page_view_node.dart

@@ -21,6 +21,9 @@ class PageViewNode extends SinglePlaceholderNode
   @override
   bool get supportsPadding => false;
 
+  @override
+  bool get isScrollingEnforced => true;
+
   /// Creates a [PageViewNode].
   PageViewNode({
     required super.id,