FormProcessor/ActionProvider does not "know" new data-type "entityReference"

If the new data-type "entity Reference" is used as a custom field, actions regarding custom-Fields are not working. This results in a JavaScript Error when trying to use those actions: Possibly unhandled rejection: {"is_error":1,"error_message":"Invalid data type ____preserved_1____quot;EntityReference"}

I explored this problem when trying to use cases with a entity-reference custom-field and using the action "CiviCase: Update custom data" for adding form-data to those cases, even if not explicitly referencing the entity-reference custom-field itself.

Background: With CiviCRM 5.60.0 the new QuickForm element type "entityReference" is introduced