mlx-community/SmolVLM-Instruct-4bit fails to describe image

[davidkoski]

The mlx-community/SmolVLM-Instruct-4bit fails to describe an image. It uses the Idefics3ImageProcessor and this doesn't use the chat template and it doesn't produce the right structure for the prompt:

You are a helpful assistant who answers questions in English.
describe the picture describe<image>

If I force it to use the template then we get a Jinja error.

HuggingFaceTB/SmolVLM2-500M-Video-Instruct-mlx works fine (and uses the SmolVLMImageProcessor)

[davidkoski]

The template issue is {{message['role'] | capitalize}} (working) vs {{message['role'].capitalize()}} (not working)