opt ScrollBehavior

Signed-off-by: dom <githubaccount56556@proton.me>

lib/main.dart

@@ -288,7 +288,7 @@ class MyApp extends StatelessWidget {
         FlutterSmartDialog.observer,
       ],
       scrollBehavior: PlatformUtils.isDesktop
-          ? const CustomScrollBehavior(desktopDragDevices)
+          ? const CustomScrollBehavior()
           : null,
     );
   }