bug: status code 403 for some model even with flag without-model

[OwenTruong]

Problem:

• Program is not supposed to request model (including the file's metadata) at all with option --without-model.

Solution:

• Add condition to not request model file's metadata when without-model option is specified.

[OwenTruong]

Might be a bit difficult to fix as metadata, image, prompt, hash filenames are dependent on the filename fetched from the content-disposition of the model request Never mind

[OwenTruong]

Ok, I see the reason why some models had 403 error (newly posted model have a pause period for when they are available over api)