Description

Warn in the docs about using json serializer with complex workflows, as discussed in #7029 (reply in thread)

Here is how I isolated the issue to the serializer and recursive references
#7029 (reply in thread)

The docs make some mention of recursive references under the yaml serializer, but for me only pickle worked for sidestepping the message size issue
https://docs.celeryq.dev/en/stable/userguide/calling.html#serializers:~:text=recursive%20references