Temporarily disable task argument checking

This was added in Celery 4 [1]. and appears to be incompatible with
our approach of injecting "request_id" into task arguments (example
exception below). Although our other apps are on Celery 5 our logs
don't show any similar issues, probably because all their tasks are
invoked without request IDs. In the longterm we should decide if we
want to enable argument checking and fix the tracing approach, or
stop tracing request IDs in Celery tasks.

[1]: https://docs.celeryproject.org/en/stable/userguide/tasks.html#argument-checking

    2021-11-01T11:37:36 delivery delivery ERROR None "RETRY: Email notification f69a9305-686f-42eb-a2ee-61bc2ba1f5f3 failed" [in /Users/benthorner/Documents/Projects/api/app/celery/provider_tasks.py:68]
    Traceback (most recent call last):
      File "/Users/benthorner/Documents/Projects/api/app/celery/provider_tasks.py", line 53, in deliver_email
        raise TypeError("test retry")
    TypeError: test retry
    [2021-11-01 11:37:36,385: ERROR/ForkPoolWorker-1] RETRY: Email notification f69a9305-686f-42eb-a2ee-61bc2ba1f5f3 failed
    Traceback (most recent call last):
      File "/Users/benthorner/Documents/Projects/api/app/celery/provider_tasks.py", line 53, in deliver_email
        raise TypeError("test retry")
    TypeError: test retry
    [2021-11-01 11:37:36,394: WARNING/ForkPoolWorker-1] Task deliver_email[449cd221-173c-4e18-83ac-229e88c029a5] reject requeue=False: deliver_email() got an unexpected keyword argument 'request_id'
    Traceback (most recent call last):
      File "/Users/benthorner/Documents/Projects/api/app/celery/provider_tasks.py", line 53, in deliver_email
        raise TypeError("test retry")
    TypeError: test retry

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "/Users/benthorner/.pyenv/versions/notifications-api/lib/python3.6/site-packages/celery/app/task.py", line 731, in retry
        S.apply_async()
      File "/Users/benthorner/.pyenv/versions/notifications-api/lib/python3.6/site-packages/celery/canvas.py", line 219, in apply_async
        return _apply(args, kwargs, **options)
      File "/Users/benthorner/.pyenv/versions/notifications-api/lib/python3.6/site-packages/celery/app/task.py", line 537, in apply_async
        check_arguments(*(args or ()), **(kwargs or {}))
    TypeError: deliver_email() got an unexpected keyword argument 'request_id'

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "/Users/benthorner/.pyenv/versions/notifications-api/lib/python3.6/site-packages/celery/app/trace.py", line 450, in trace_task
        R = retval = fun(*args, **kwargs)
      File "/Users/benthorner/Documents/Projects/api/app/celery/celery.py", line 74, in __call__
        return super().__call__(*args, **kwargs)
      File "/Users/benthorner/.pyenv/versions/notifications-api/lib/python3.6/site-packages/celery/app/trace.py", line 731, in __protected_call__
        return self.run(*args, **kwargs)
      File "/Users/benthorner/Documents/Projects/api/app/celery/provider_tasks.py", line 71, in deliver_email
        self.retry(queue=QueueNames.RETRY)
      File "/Users/benthorner/.pyenv/versions/notifications-api/lib/python3.6/site-packages/celery/app/task.py", line 733, in retry
        raise Reject(exc, requeue=False)
    celery.exceptions.Reject: (TypeError("deliver_email() got an unexpected keyword argument 'request_id'",), False)

app/celery/celery.py

@@ -22,6 +22,7 @@ def make_task(app):
     class NotifyTask(Task):
         abstract = True
         start = None
+        typing = False
 
         def on_success(self, retval, task_id, args, kwargs):
             elapsed_time = time.monotonic() - self.start