fix: Review changes

packages/stream_chat/test/src/api/channel_test.dart

@@ -638,7 +638,6 @@ void main() {
           Reaction(
             type: 'test',
             createdAt: DateTime.now(),
-            score: 0,
             user: User(
               id: client.state?.user?.id ?? '',
             ),

packages/stream_chat/test/src/client_test.dart

@@ -777,7 +777,7 @@ void main() {
           ),
         );
 
-        await client.deleteMessage(Message(id: messageId, text: ''));
+        await client.deleteMessage(Message(id: messageId));
 
         verify(() => mockDio.delete<String>('/messages/$messageId')).called(1);
       });

packages/stream_chat/test/src/models/action_test.dart

@@ -5,7 +5,8 @@ import 'package:stream_chat/src/models/action.dart';
 
 void main() {
   group('src/models/action', () {
-    const jsonExample = '''{
+    const jsonExample = '''
+    {
     "name": "name",
     "style": "style",
     "text": "text",

packages/stream_chat/test/src/models/attachment_test.dart

@@ -6,7 +6,8 @@ import 'package:test/test.dart';
 
 void main() {
   group('src/models/attachment', () {
-    const jsonExample = '''{
+    const jsonExample = '''
+    {
   "type": "giphy",
   "title": "awesome",
   "title_link": "https://giphy.com/gifs/nrkp3-dance-happy-3o7TKnCdBx5cMg0qti",

packages/stream_chat/test/src/models/channel_test.dart

@@ -44,7 +44,6 @@ void main() {
         id: 'id',
         cid: 'a:a',
         extraData: {'name': 'cool'},
-        frozen: false,
       );
 
       expect(

packages/stream_chat/test/src/models/device_test.dart

@@ -5,7 +5,8 @@ import 'package:stream_chat/src/models/device.dart';
 
 void main() {
   group('src/models/device', () {
-    const jsonExample = '''{
+    const jsonExample = '''
+    {
       "id": "device-id",
       "push_provider": "push-provider"
     }''';

packages/stream_chat/test/src/models/message_test.dart

@@ -8,7 +8,8 @@ import 'package:stream_chat/src/models/user.dart';
 
 void main() {
   group('src/models/message', () {
-    const jsonExample = r'''{
+    const jsonExample = r'''
+    {
       "id": "4637f7e4-a06b-42db-ba5a-8d8270dd926f",
       "text": "https://giphy.com/gifs/the-lion-king-live-action-5zvN79uTGfLMOVfQaA",
       "type": "regular",
@@ -103,7 +104,7 @@ void main() {
             'https://giphy.com/gifs/the-lion-king-live-action-5zvN79uTGfLMOVfQaA',
         silent: false,
         attachments: [
-          Attachment.fromJson({
+          Attachment.fromJson(const {
             'type': 'video',
             'author_name': 'GIPHY',
             'title': 'The Lion King Disney GIF - Find \u0026 Share on GIPHY',
@@ -123,7 +124,7 @@ void main() {
         ],
         showInChannel: true,
         parentId: 'parentId',
-        extraData: {'hey': 'test'},
+        extraData: const {'hey': 'test'},
       );
 
       expect(