Manual roll of Dart SDK from e8b86b073413 to 823a69e2a34d (flutter/engine#41614)

Requires a change to an analyzer script due to a deprecated API

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': 'e8b86b073413d929e6a73ad16e1db7224a17a281',
+  'dart_revision': '823a69e2a34d4cada6d2549616b1be255519603f',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -68,7 +68,7 @@ vars = {
   'dart_perfetto_rev': 'b8da07095979310818f0efde2ef3c69ea70d62c5',
   'dart_protobuf_gn_rev': 'f872f05cb0378eef9a7a2609076929f0f35b4141',
   'dart_protobuf_rev': 'b90a4c44d56075eb23ee38ae56ce0febfd7f280f',
-  'dart_pub_rev': '21eb39e148c720ab8577bbf3bf089556a113eb10',
+  'dart_pub_rev': 'a3f8b2fd36ec432450caf907474a02023ef3e44e',
   'dart_root_certificates_rev': '692f6d6488af68e0121317a9c2c9eb393eb0ee50',
   'dart_watcher_rev': '00aa79b0ff5562c9dafb0525891e2e69c51be06d',
   'dart_webdev_rev': '12f22857d509832e0e80616d937088992f565e6b',

engine/src/flutter/tools/api_check/test/apicheck_test.dart

@@ -192,7 +192,7 @@ class NativeFunctionVisitor extends RecursiveAstVisitor<void> {
         type = (parameter.parameter as SimpleFormalParameter).type;
       }
       if (type! is NamedType) {
-        final String name = (type as NamedType).name.name;
+        final String name = (type as NamedType).name2.lexeme;
         if (type.question != null && simpleTypes.contains(name)) {
           errors.add(description);
           return;