Roll Dart SDK from 4542b7ade01c to 16280dd55456 (1 revision) (flutter#182349)

https://dart.googlesource.com/sdk.git/+log/4542b7ade01c..16280dd55456

2026-02-13 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.12.0-144.0.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
Please CC dart-vm-team@google.com,jimgraham@google.com on the revert to
ensure that a human
is aware of the problem.

To file a bug in Flutter:
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

Author: engine-flutter-autoroll

DEPS

@@ -59,7 +59,7 @@ vars = {
   # updated revision list of existing dependencies. You will need to
   # gclient sync before and after update deps to ensure all deps are updated.
   # updated revision list of existing dependencies.
-  'dart_revision': '4542b7ade01c91e9321a6ef2c9ae875b527455f7',
+  'dart_revision': '16280dd554560c7c11a1efdf40b011286cb6e11c',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py