feature: keep seperate counts for schema/data add/update/deletes in the DiffTreeSummary

[wvandeun]

Component

Frontend UI, API Server / GraphQL

Describe the Feature Request

The count of changes (add/update/delete) in a diff doesn't seem to differentiate between changes at the data level and changes at the schema level. It would be more clear to differentiate between schema and data change counts.

Describe the Use Case

The current way of doing things can be confusing, especially if you have a branch where you make changes to both the schema and the data.

For example we could have 5000 changes to the schema and only 3 new nodes were added. In that case when you navigate to the data diff page, you will see 5003 changes reported, whereas we only had 3 data changes.

Additional Information

No response