Release 3.47 (#2879)

Minor updates for release 3.47

## 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 have added sample code updates to the [changelog].
- [x] I updated/added relevant documentation (doc comments with `///`).


If you need help, consider asking for advice on the #hackers-devrel
channel on [Discord].

<!-- Links -->
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/master/docs/contributing/Style-guide-for-Flutter-repo.md
[CLA]: https://cla.developers.google.com/
[Discord]:
https://github.com/flutter/flutter/blob/master/docs/contributing/Chat.md
[Contributors Guide]:
https://github.com/flutter/samples/blob/main/CONTRIBUTING.md
[changelog]: ../CHANGELOG.md

---------

Co-authored-by: Parker Lougheed <parlough@gmail.com>

cupertino_gallery/lib/gallery_home.dart

@@ -31,9 +31,9 @@ class GalleryHome extends StatelessWidget {
           ),
         ],
       ),
-      tabBuilder: (BuildContext context, int index) {
+      tabBuilder: (context, index) {
         return CupertinoTabView(
-          builder: (BuildContext context) {
+          builder: (context) {
             return switch (index) {
               0 => const WidgetsPage(),
               1 => SettingsPage(