Deal with Master CI failures (#2219)

## 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 `///`).
- [x] All existing and new tests are passing.

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https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
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[Contributors Guide]:
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desktop_photo_search/fluent_ui/lib/src/widgets/unsplash_search_content.dart

@@ -9,7 +9,7 @@ import 'package:provider/provider.dart';
 import '../model/photo_search_model.dart';
 import '../unsplash/photo.dart';
 import '../widgets/photo_details.dart';
-import '../widgets/split.dart';
+import '../widgets/split.dart' as split;
 
 class UnsplashSearchContent extends StatefulWidget {
   const UnsplashSearchContent({super.key});
@@ -31,7 +31,7 @@ class _UnsplashSearchContentState extends State<UnsplashSearchContent> {
   Widget build(BuildContext context) {
     final photoSearchModel = Provider.of<PhotoSearchModel>(context);
 
-    return Split(
+    return split.Split(
       axis: Axis.horizontal,
       initialFirstFraction: 0.4,
       firstChild: Scrollbar(