can't scroll horizontally in example: simple_catalog_app

[SilvanusP]

https://github.com/playbook-ui/playbook-flutter/tree/main/examples/simple_example/simple_catalog_app

only in web*

[SilvanusP]

https://stackoverflow.com/questions/69424933/flutter-pageview-not-swipeable-on-web-desktop-mode

class AppScrollBehavior extends MaterialScrollBehavior {
  @override
  Set<PointerDeviceKind> get dragDevices => {
        PointerDeviceKind.touch,
        PointerDeviceKind.mouse,
        PointerDeviceKind.trackpad,
      };
}

MaterialApp(
      scrollBehavior: AppScrollBehavior(),
      ...
    );