Add TMDB rate limiting tests (22 tests, needs async mock refinement)

tests/integration/test_websocket_resilience.py

@@ -6,14 +6,17 @@ server restart recovery, authentication, message ordering, and broadcast filteri
 import asyncio
 import json
 import time
-from typing import List, Dict, Any
+from typing import Any, Dict, List
 from unittest.mock import Mock, patch
 
 import pytest
 from fastapi import WebSocket
 from fastapi.testclient import TestClient
 
-from src.server.services.websocket_service import WebSocketService, get_websocket_service
+from src.server.services.websocket_service import (
+    WebSocketService,
+    get_websocket_service,
+)
 
 
 @pytest.fixture