[flutter_releases] Flutter stable 3.22.0 Engine Cherrypicks (flutter#53211)

# Flutter stable 3.22.0 Engine

## Scheduled Cherrypicks

- Roll dart revision: dart-lang/sdk@1a849f918

Author: itsjustkevin

DEPS

@@ -62,7 +62,7 @@ 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': 'b0e7f171c7c9ab82944ffd6918b80a0df36e0549',
+  'dart_revision': '1a849f91804e73a830844a5bf546a3f7027fc36d',
 
   # 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: 4f1220293023cdec5a6af5bd69bcb0ab
+Signature: accf41e49999ccd363df249912f8747d
 
 ====================================================================================================
 LIBRARY: dart