add mcp runtime as default to all providers (#816)

# What does this PR do?

This is needed to have the notebook work with MCP

llama_stack/templates/fireworks/run-with-safety.yaml

@@ -92,6 +92,9 @@ providers:
   - provider_id: memory-runtime
     provider_type: inline::memory-runtime
     config: {}
+  - provider_id: model-context-protocol
+    provider_type: remote::model-context-protocol
+    config: {}
 metadata_store:
   type: sqlite
   db_path: ${env.SQLITE_STORE_DIR:~/.llama/distributions/fireworks}/registry.db