Bulk refund: Fix only first refund being made (Z#23239965)

src/pretix/control/views/orders.py

@@ -382,7 +382,7 @@ class OrderOverpaidRefundBulkActionView(BaseOrderBulkActionView):
                         'provider': refund.provider,
                     }, user=self.request.user)
                     payment.payment_provider.execute_refund(refund)
-                    return True
+                return bool(proposals)
             except (ValueError, PaymentException):
                 return False