fix refund on corporate tournament

tournaments/services/payment_service.py

@@ -313,12 +313,19 @@ class PaymentService:
             if payment_intent.status != 'succeeded':
                 return False, "Le paiement n'a pas été complété, il ne peut pas être remboursé.", None
 
-            # Process the refund
-            refund = stripe.Refund.create(
-                payment_intent=payment_id,
-                refund_application_fee=True,
-                reverse_transfer=True
-            )
+            # Process the refund - with different parameters based on tournament type
+            refund_params = {
+                'payment_intent': payment_id
+            }
+
+            # Only include transfer reversal for non-corporate tournaments
+            if not tournament.is_corporate_tournament:
+                refund_params.update({
+                    'refund_application_fee': True,
+                    'reverse_transfer': True
+                })
+
+            refund = stripe.Refund.create(**refund_params)
 
             for player_reg in player_registrations:
                 player_reg.payment_type = None