🐛 fix(celery.py): fix type hinting error for AsyncResult import

🔒 chore(celery.py): add check for delay method existence in launch_task to prevent errors
🔒 chore(celery.py): change get_task return type hint to Any to match actual return type

src/backend/langflow/services/task/backends/celery.py

@@ -1,5 +1,5 @@
 from typing import Any, Callable
-from celery.result import AsyncResult
+from celery.result import AsyncResult  # type: ignore
 from langflow.services.task.backends.base import TaskBackend
 from langflow.worker import celery_app
 
@@ -11,8 +11,10 @@ class CeleryBackend(TaskBackend):
     def launch_task(
         self, task_func: Callable[..., Any], *args: Any, **kwargs: Any
     ) -> str:
-        task = task_func.apply_async(args=args, kwargs=kwargs)
+        if not hasattr(task_func, "delay"):
+            raise ValueError(f"Task function {task_func} does not have a delay method")
+        task = task_func.delay(*args, **kwargs)
         return task.id
 
-    def get_task(self, task_id: str) -> AsyncResult:
+    def get_task(self, task_id: str) -> Any:
         return AsyncResult(task_id, app=self.celery_app)