Should `last_response_json()` work with 'application/problem+json' content type?

[cgiachalis]

Currently last_response_json() errors with application/problem+json response:

last_response_json()
# Error in `last_response_json()`:
# ! Last response doesn't have a JSON body.

But this works:

last_response() |> resp_body_json()

A quick look at the source shows that:

• resp_body_json() uses resp_check_content_type and
• last_response_json() checks resp_content_type(resp) if it is "application/json"