Manual roll of Dart SDK from a677378ae254 to 0471164827b9 (#49054)

Includes an update for a deprecated FFI API
(see https://dart.googlesource.com/sdk/+/efb60eac5999e47853505f2e3fc3eaf19f56f495)

Author: jason-simmons

DEPS

@@ -66,7 +66,7 @@ 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': 'a677378ae25424f8e74b2f750e879458e9a17488',
+  'dart_revision': '0471164827b9a50dc03ac5988302fee7459365ca',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -425,7 +425,7 @@ deps = {
    Var('dart_git') + '/mockito.git@57a7c820ffae61e3df0dbc279ad98b92751175f0',
 
   'src/third_party/dart/third_party/pkg/native':
-   Var('dart_git') + '/native.git@5aeab2915167fd24ccb1241c07516b388fda2b9b',
+   Var('dart_git') + '/native.git@b668ca94f551fcebdeb3ce9f822170facced55ae',
 
   'src/third_party/dart/third_party/pkg/package_config':
    Var('dart_git') + '/package_config.git@33dd24659147bd7ed2fa87aeacc52d199be766b4',

ci/licenses_golden/excluded_files

@@ -2230,7 +2230,6 @@
 ../../../third_party/dart/.gn
 ../../../third_party/dart/.mailmap
 ../../../third_party/dart/.style.yapf
-../../../third_party/dart/.vpython
 ../../../third_party/dart/AUTHORS
 ../../../third_party/dart/CHANGELOG.md
 ../../../third_party/dart/CONTRIBUTING.md

ci/licenses_golden/licenses_dart

@@ -1,4 +1,4 @@
-Signature: 9566e23501be49ccdb4d0e710a9b74e7
+Signature: 08acc7ac20b6971314186d5984ee5194
 
 ====================================================================================================
 LIBRARY: dart

tools/path_ops/dart/lib/path_ops.dart

@@ -203,7 +203,7 @@ class Path implements PathProxy {
     _updatePathData();
     final int count = _pathData!.ref.verb_count;
     return List<PathVerb>.generate(count, (int index) {
-      return PathVerb.values[_pathData!.ref.verbs.elementAt(index).value];
+      return PathVerb.values[_pathData!.ref.verbs[index]];
     }, growable: false);
   }