Add breadcrumb to docs (#31178)

packages/flutter/lib/src/widgets/orientation_builder.dart

@@ -22,6 +22,8 @@ typedef OrientationWidgetBuilder = Widget Function(BuildContext context, Orienta
 ///  * [CustomSingleChildLayout], which positions its child during layout.
 ///  * [CustomMultiChildLayout], with which you can define the precise layout
 ///    of a list of children during the layout phase.
+///  * [MediaQueryData.orientation], which exposes whether the device is in
+///    landscape or portrait mode.
 class OrientationBuilder extends StatelessWidget {
   /// Creates an orientation builder.
   ///