refactor(template_transform): use keyword-only arguments (#9575)

api/core/workflow/nodes/template_transform/template_transform_node.py

 
     @classmethod
     def _extract_variable_selector_to_variable_mapping(
-        cls, graph_config: Mapping[str, Any], node_id: str, node_data: TemplateTransformNodeData
+        cls, *, graph_config: Mapping[str, Any], node_id: str, node_data: TemplateTransformNodeData
     ) -> Mapping[str, Sequence[str]]:
         """
         Extract variable selector to variable mapping