Make workflow exports diagram-friendly by linking mid_path_action steps to their action details

When exporting workflows, some steps appear as mid_path_action and their actual behavior (tagging, assigning, etc.) is stored in embedded_rules. This makes it impossible to automatically generate accurate workflow diagrams (e.g., Mermaid) from the export, because there’s no reliable mapping between the step and what it does. Please add a clear link or identifier in the export so each mid_path_action can be matched to its corresponding embedded_rules action, so diagrams can be generated without manual UI inspection.