refactor(bloc_layout): update package using nullable component data (#92)

packages/wyatt_bloc_layout/lib/src/presentation/consumers/crud_cubit_consumer_screen_bases.dart

@@ -27,10 +27,11 @@ abstract class CrudCubitConsumerScreenBase<
   const CrudCubitConsumerScreenBase({super.key});
 
   Widget errorBuilder(BuildContext context, CrudError state) =>
-      context.components.errorWidget.configure(error: state.message);
+      context.components.errorWidget?.configure(error: state.message) ??
+      const SizedBox.shrink();
 
   Widget loadingBuilder(BuildContext context, CrudLoading state) =>
-      context.components.loadingWidget;
+      context.components.loadingWidget ?? const SizedBox.shrink();
 
   Widget initialBuilder(BuildContext context, CrudInitial state) =>
       const SizedBox.shrink();