Update for Flutter 3.10 beta (#1746)

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I updated/added relevant documentation (doc comments with `///`).
- [ ] All existing and new tests are passing.

---------

Co-authored-by: David Iglesias <ditman@gmail.com>
Co-authored-by: Mark Thompson <2554588+MarkTechson@users.noreply.github.com>
Co-authored-by: John Ryan <ryjohn@google.com>

animations/lib/src/basics/animated_builder.dart

@@ -54,10 +54,11 @@ class _AnimatedBuilderDemoState extends State<AnimatedBuilderDemo>
               ),
               child: child,
               onPressed: () {
-                if (controller.status == AnimationStatus.completed) {
-                  controller.reverse();
-                } else {
-                  controller.forward();
+                switch (controller.status) {
+                  case AnimationStatus.completed:
+                    controller.reverse();
+                  default:
+                    controller.forward();
                 }
               },
             );