This commit updates the quick-fill endpoint templates used in the model and pre-fill group editors:
• `EditModelModal.jsx`
• `EditPrefillGroupModal.jsx`
Key changes
1. Added missing default endpoints defined in `common/endpoint_defaults.go`.
- `openai-response`
- `gemini`
- `jina-rerank`
2. Ensured each template entry includes both `path` and `method` for clarity.
Benefits
• Provides one-click access to every built-in upstream endpoint, reducing manual input.
• Keeps the UI definitions in sync with backend defaults, preventing mismatch errors.
