Roll Dart SDK from dffc5f3f9be6 to ee793f732959 (1 revision) (flutter#178607)

https://dart.googlesource.com/sdk.git/+log/dffc5f3f9be6..ee793f732959

2025-11-16 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.11.0-142.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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is aware of the problem.

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Author: engine-flutter-autoroll

DEPS

@@ -57,7 +57,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'dffc5f3f9be65fc4d86031f079078c6db01a2f76',
+  'dart_revision': 'ee793f7329597932475275d2fdfd14074eb84d7a',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py