[V1] Support Mistral3 in V1

[mgoin]

VLLM_USE_V1=1 python examples/offline_inference/vision_language.py -m mistral3
...
The image depicts a picturesque scene featuring the iconic Tokyo Skytree, a tall broadcasting and observation tower located in Tokyo, Japan. The tower is framed by a canopy of cherry blossom (sakura) trees in full bloom. The blossoms are predominantly pink, creating a vibrant contrast against the clear blue sky.

[github-actions]

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[DarkLight1337]

Can you update docs as well?

[DarkLight1337]

I have verified this locally as well, so otherwise LGTM