Merge gallery_scroll_improvement

mobile/apps/photos/lib/models/gallery/gallery_groups.dart

@@ -224,12 +224,13 @@ class GalleryGroups {
                 int i = 0;
                 while (!endOfListReached) {
                   gridRowChildren.add(
-                    GalleryFileWidget(
+                    RepaintBoundary(
                       key: ValueKey(
                         tagPrefix +
                             filesInGroup[firstIndexOfRowWrtFilesInGroup + i]
                                 .tag,
                       ),
+                      child: GalleryFileWidget(
                         file: filesInGroup[firstIndexOfRowWrtFilesInGroup + i],
                         selectedFiles: selectedFiles,
                         limitSelectionToOne: limitSelectionToOne,
@@ -237,6 +238,7 @@ class GalleryGroups {
                         photoGridSize: crossAxisCount,
                         currentUserID: currentUserID,
                       ),
+                    ),
                   );
 
                   endOfListReached =
@@ -247,12 +249,13 @@ class GalleryGroups {
               } else {
                 for (int i = 0; i < crossAxisCount; i++) {
                   gridRowChildren.add(
-                    GalleryFileWidget(
+                    RepaintBoundary(
                       key: ValueKey(
                         tagPrefix +
                             filesInGroup[firstIndexOfRowWrtFilesInGroup + i]
                                 .tag,
                       ),
+                      child: GalleryFileWidget(
                         file: filesInGroup[firstIndexOfRowWrtFilesInGroup + i],
                         selectedFiles: selectedFiles,
                         limitSelectionToOne: limitSelectionToOne,
@@ -260,6 +263,7 @@ class GalleryGroups {
                         photoGridSize: crossAxisCount,
                         currentUserID: currentUserID,
                       ),
+                    ),
                   );
                 }
               }