Changes to List MCP servers (config-declared and admin-managed)

added the optional property items/disallowed_user_paths to the response with the 200 status

added the optional property items/excluded_tool_count to the response with the 200 status

added the new internal_error enum value to the type response property for the response status 401

added the new internal_error enum value to the type response property for the response status 503

added the new permission_error enum value to the type response property for the response status 401

added the new permission_error enum value to the type response property for the response status 503

added the optional property items/slug to the response with the 200 status

endpoint added