Hide schedule section when editing a DAST scan that does not have a schedule
As a temporary workaround to #340534 (closed), we are going to hide the schedule section from the on-demand scans form when editing a scan that was created without a schedule. This will prevent users from hitting a GraphQL error when trying to schedule a scan that was initially created without a schedule (which affects all of the scans that were created before the scheduling feature was introduced in the first place).