Fields added with AddFields transformations in builder manifests are downcased

[jscheel]

I have a transformation that adds a field. When I sync, the field does get added, but it is downcased. This does not happen on the airbyte test interface.

transformations:
    - type: AddFields
      fields:
        - path:
            - conversationId
          value: "{{stream_partition.conversationId}}"

The field is added, but it is added as conversationid instead of conversationId

[jscheel]

Actually, looks like special characters are stripped too. For example "conversation_id" becomes "conversationid".