aaa48e2247
This will allow use of Dart 3.13 features (such as primary constructors) within the SDK itself. Note that some generated files required benign updates due to formatter behavior changes. Change-Id: I595554e9cff3dbaa3f11da407d6c26036a6a6964 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/503662 Auto-Submit: Paul Berry <paulberry@google.com> Reviewed-by: Samuel Rawlins <srawlins@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>