Revert "Roll Dart SDK from ab417bc74bb1 to c162b4979562 (1 revision) (#44986)"

This reverts commit 41912e7.

Author: zanderso

DEPS

@@ -53,7 +53,7 @@ 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': 'c162b4979562ad235099ea98e7bddcb63f9af19d',
+  'dart_revision': 'ab417bc74bb1a81acbb3b981d440d4bfe68f5051',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_dart

@@ -1,4 +1,4 @@
-Signature: 5e690c3cbfe8c299920463c13ac2a0f6
+Signature: 444bc549b7c72a33277494f816ccdd8d
 
 ====================================================================================================
 LIBRARY: dart