We were using metadata client by legacy. Architecture is not great for Core engine: workflows are available both in data and metadata client. It makes more sense to use the data client since workflows are part of standard objects
Closes #8191 https://github.com/user-attachments/assets/694da229-cc91-4df2-97a0-49cd5dabcf12
- add outputSchema in workflow step settings - use outputSchemas to compute step available variables https://github.com/user-attachments/assets/6b851d8e-625c-49ff-b29c-074cd86cbfee