Batch mode does not support response_schema in JSONL input file

[pietro-bianchi-choreograph]

I am trying to enforce a response_schema in my JSONL file for batch mode but I get code': 400, 'message': 'Request contains an invalid argument.'

In docs I can find that:

Each line in this file must be a JSON object containing a user-defined key and a request object, where the request is a valid GenerateContentRequest object

and also that you can include ResponseSchema in GenerationConfig

source https://ai.google.dev/api/generate-content#generationconfig

[carloskiki]

Related to #1137.