Payment: validation error on refund

[armanddidierjean]

FormNotificationResultContent.eventType Input should be [type=literal_error, input_value='Payment', input_type=str] For further information visit https://errors.pydantic.dev/2.7/v/literal_error [FormNotificationResultContent.data](http://formnotificationresultcontent.data/).state Input should be 'Public', 'Private', 'Draft' or 'Disabled' [type=enum, input_value='Refunded', input_type=str] For further information visit https://errors.pydantic.dev/2.7/v/enum