Roll Dart SDK from 4bfbad776c1a to 7ed58b3c462a (1 revision) (flutter/engine#57230)

https://dart.googlesource.com/sdk.git/+log/4bfbad776c1a..7ed58b3c462a

2024-12-16 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com Version 3.7.0-256.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC dart-vm-team@google.com,jonahwilliams@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter Engine: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
3 files changed
tree: d3a14fddc1163d4a5b1eb86cf8db2052c87643fa
  1. engine/
  2. DEPS