test: update ModerationClientTester to include tearDown and fix client type

Author: xsahil03x

packages/stream_feeds_test/lib/src/testers/moderation_client_tester.dart

@@ -16,6 +16,7 @@ import 'base_tester.dart';
 /// [setUp] is optional and runs before [body] for setting up mocks and test state.
 /// [body] is the test callback that receives a [ModerationClientTester] for interactions.
 /// [verify] is optional and runs after [body] for verifying API calls and interactions.
+/// [tearDown] is optional and runs after [verify] for custom cleanup.
 /// [skip] is optional, skip this test.
 /// [tags] is optional, tags for test filtering. Defaults to ['moderation-client'].
 /// [timeout] is optional, custom timeout for this test.
@@ -47,18 +48,20 @@ void moderationClientTest(
   FutureOr<void> Function(ModerationClientTester tester)? setUp,
   required FutureOr<void> Function(ModerationClientTester tester) body,
   FutureOr<void> Function(ModerationClientTester tester)? verify,
+  FutureOr<void> Function(ModerationClientTester tester)? tearDown,
   bool skip = false,
   Iterable<String> tags = const ['moderation-client'],
   test.Timeout? timeout,
 }) {
-  return testWithTester<StreamFeedsClient, ModerationClientTester>(
+  return testWithTester<ModerationClient, ModerationClientTester>(
     description,
     user: user,
-    build: (client) => client,
+    build: (client) => client.moderation,
     createTesterFn: _createModerationClientTester,
     setUp: setUp,
     body: body,
     verify: verify,
+    tearDown: tearDown,
     skip: skip,
     tags: tags,
     timeout: timeout,
@@ -70,26 +73,23 @@ void moderationClientTest(
 /// Provides helper methods for mocking and verifying moderation API calls.
 ///
 /// Resources are automatically cleaned up after the test completes.
-final class ModerationClientTester extends BaseTester<StreamFeedsClient> {
+final class ModerationClientTester extends BaseTester<ModerationClient> {
   const ModerationClientTester._({
     required super.subject,
     required super.wsStreamController,
     required super.feedsApi,
   });
 
-  /// The Stream Feeds client being tested.
-  StreamFeedsClient get client => subject;
-
-  /// The moderation client for performing moderation operations.
-  ModerationClient get moderation => subject.moderation;
+  /// The Moderation client being tested.
+  ModerationClient get moderation => subject;
 }
 
 // Creates a ModerationClientTester for testing moderation client operations.
 //
 // Automatically sets up WebSocket connection and registers cleanup handlers.
 // This function is for internal use by moderationClientTest only.
 Future<ModerationClientTester> _createModerationClientTester({
-  required StreamFeedsClient subject,
+  required ModerationClient subject,
   required StreamFeedsClient client,
   required MockDefaultApi feedsApi,
   required MockWebSocketChannel webSocketChannel,