i met an error when i try to delete a model.

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### Dify version

1.17

### Cloud or Self Hosted

Self Hosted (Docker)

### Steps to reproduce

i try to delete a model from openai-api-compatible and met an error

### ✔️ Expected Behavior

delete that model

### ❌ Actual Behavior

Reproduce the deletion flow in a self-hosted Docker installation of Dify 1.17 for a model from openai-api-compatible. Start with the reported Pydantic validation error showing missing model and model_type fields, then trace the delete request and its validation response. Done means the selected model is deleted without this error.

Written by the indexing model from the issue text.