[mob][photos] Chore

mobile/lib/ui/viewer/search/result/search_thumbnail_widget.dart

@@ -17,8 +17,8 @@ class SearchThumbnailWidget extends StatelessWidget {
     this.file,
     this.tagPrefix, {
     this.searchResult,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   Widget build(BuildContext context) {

mobile/lib/ui/viewer/search/search_suggestions.dart

@@ -24,8 +24,8 @@ import "package:photos/utils/navigation_util.dart";
 ///widgets from the queue at regular intervals.
 class SearchSuggestionsWidget extends StatefulWidget {
   const SearchSuggestionsWidget({
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<SearchSuggestionsWidget> createState() =>