* fix(hydra): keep jsonapi input schemas out of the json rewrite

The Hydra schema factory rewrote every input schema to json. Because it
wraps the JSON:API factory, a jsonapi request body was documented as a
plain object without the data/attributes/relationships envelope
whenever jsonld was enabled.

Only jsonapi is now excluded from the rewrite, so other formats are
unchanged. JSON:API input definitions get an .input postfix, e.g.
Dummy.jsonapi.input, so they no longer share a name with the output
definition, which requires data.id and lists included. The input
definition requires only type on POST and drops included.

* fix(hydra): inline input definition name