Changes to Upload an instance import chunk

removed subschema #1 subschema #2 from the request body oneOf list

removed the media type application/json for the response with the status 409

added subschema #1 subschema #2 to the request body oneOf list

media type application/json was changed to a more specific media type application/problem+json for the response status 400

media type application/json was changed to a more specific media type application/problem+json for the response status 401

media type application/json was changed to a more specific media type application/problem+json for the response status 404

media type application/json was changed to a more specific media type application/problem+json for the response status 413

media type application/json was changed to a more specific media type application/problem+json for the response status 419

media type application/json was changed to a more specific media type application/problem+json for the response status 423

media type application/json was changed to a more specific media type application/problem+json for the response status 429

media type application/json was changed to a more specific media type application/problem+json for the response status 500