* Wrap comment params for flat JSON payloads
The SDK sends flat JSON ({"body": "..."}) but Rails wrap_parameters
auto-detection misses :body since it's a virtual ActionText attribute,
not in Comment.attribute_names. Explicitly declare wrap_parameters so
params.expect(comment: [...]) works with both wrapped and flat payloads.
* Test comment create and update with flat JSON params
Jeremy Daer
71a1ee7031