Only Show Compatible Models in Model Selection Dropdown
**The Task**
Filter the model selection dropdown to only display compatible models for the given feature

**Definition of done**
- When selecting a feature configuration, only compatible models are available for selection for the given feature. Refer to [documentation](https://docs.gitlab.com/ee/administration/self_hosted_models/install_infrastructure.html#step-1-install-llm-serving-infrastructure) for feature compatibilities
**NOTE:** May need breaking down further
issue