Add get_cache method to ChatService

src/backend/langflow/services/chat/service.py

@@ -236,6 +236,12 @@ class ChatService(Service):
                 logger.error(f"Error closing connection: {exc}")
             self.disconnect(client_id)
             
+    def get_cache(self, client_id: str) -> Any:
+        """
+        Get the cache for a client.
+        """
+        return self.chat_cache.get(client_id)
+
 
 def dict_to_markdown_table(my_dict):
     markdown_table = "| Key | Value |\n|---|---|\n"