Drop event ordering claim for full refunds

src/Id/Webhooks/EventType.php

@@ -15,8 +15,8 @@ final class EventType
     public const ORDER_SHIPPED = 'order.shipped';
     /**
      * Money was given back for an order (a refund or a partial cancellation, with a credit note);
-     * see the order's `refunds` and `refunded_total`. A full refund also cancels the order
-     * (order.cancelled follows).
+     * see the order's `refunds` and `refunded_total`. A full refund also cancels the order,
+     * so order.cancelled is sent too; don't rely on the order of the two events.
      */
     public const ORDER_REFUNDED = 'order.refunded';