3.38 / 3.10 (#2742)

This PR makes samples pass CI when 3.10 is released.

## 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 `///`).

platform_design/lib/utils.dart

@@ -39,8 +39,7 @@ String generateRandomHeadline() {
     2 => '$artist releases ${capitalizePair(wordPairIterator.first)}',
     3 => '$artist talks about his ${nouns[_random.nextInt(nouns.length)]}',
     4 => '$artist talks about her ${nouns[_random.nextInt(nouns.length)]}',
-    5 =>
-      '$artist talks about their ${nouns[_random.nextInt(nouns.length)]}',
+    5 => '$artist talks about their ${nouns[_random.nextInt(nouns.length)]}',
     6 =>
       '$artist says their music is inspired by ${wordPairIterator.first.join(' ')}',
     7 =>