[deps] Roll prebuilt Dart SDK to 3.13.0-103.1.beta.

This will allow use of Dart 3.13 features (such as primary
constructors) within the SDK itself.

Note that some generated files required benign updates due to
formatter behavior changes.

Change-Id: I595554e9cff3dbaa3f11da407d6c26036a6a6964
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/503662
Auto-Submit: Paul Berry <paulberry@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>

DEPS

@@ -55,7 +55,7 @@ vars = {
   # choose which SHA to place here is to choose a release from
   # https://dart.dev/get-dart/archive, and then look up the version SHA from
   # the tag. Prefer using the stable channel when possible.
-  "sdk_tag": "git_revision:9aa7097f2e3e80647d539b5575273257e1883633",
+  "sdk_tag": "version:3.13.0-103.1.beta",
 
   # co19 is a cipd package automatically generated for each co19 commit.
   # Use tests/co19/update.sh to update this hash.

pkg/analysis_server/lib/protocol/protocol_generated.dart

@@ -12,6 +12,7 @@ import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/src/protocol/protocol_internal.dart';
 import 'package:analyzer_plugin/src/utilities/client_uri_converter.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
+
 // We use many SCREAMING_SNAKE_CASE identifiers which might affect API.
 // ignore_for_file: constant_identifier_names, unnecessary_ignore
 

pkg/analysis_server_client/lib/src/protocol/protocol_generated.dart

@@ -11,6 +11,7 @@ import 'dart:convert' hide JsonDecoder;
 import 'package:analysis_server_client/src/protocol/protocol_base.dart';
 import 'package:analysis_server_client/src/protocol/protocol_common.dart';
 import 'package:analysis_server_client/src/protocol/protocol_internal.dart';
+
 // We use many SCREAMING_SNAKE_CASE identifiers which might affect API.
 // ignore_for_file: constant_identifier_names, unnecessary_ignore