✨ re-enable v1

[joerunde]

Adds the new supports_v1 platform api added upstream here: vllm-project/vllm#15417

This removes one more blocker to moving past vllm v0.8.0

[github-actions]

👋 Hi! Thank you for contributing to vLLM support on Spyre.
Just a reminder: Make sure that your code passes all the linting checks, otherwise your PR won't be able to be merged. To do so, first install the linting requirements, then run format.sh and commit the changes:

pip install -r requirements-lint.txt
bash format.sh

Now you are good to go 🚀

[wallashss]

LGTM!