Journey Version Step Events fix field name for batch recurrences

## What are the schemas that are affected by the issue

## What are examples of products that are impacted by the issue

No affected schema, file, test, or product example is identified in the issue. Start by locating the Journey Version Step Events schemas and the batch recurrence field, then confirm the intended field name from the relevant data-model context; done means the schema uses the corrected name and affected examples remain valid.

Written by the indexing model from the issue text.