[FIX] sale_loyalty: prevent partial rewards with points

Since odoo/odoo@b3a2fb51bc, it is not possible to use partial
points rewards. However this commit only fixes the behavior for loyalty
cards, where it should be applied to many other program types.

closes odoo/odoo#143643

X-original-commit: 64ebec5c7db88c247f3dafbeecbd2ae2b9ee4238
Signed-off-by: Vallaeys Valentin (vava) <vava@odoo.com>

addons/sale_loyalty/models/sale_order.py

@@ -324,7 +324,7 @@ class SaleOrder(models.Model):
         max_discount = min(self.amount_total, max_discount)
         if reward.discount_mode == 'per_point':
             points = self._get_real_points_for_coupon(coupon)
-            if reward.program_type == 'loyalty':
+            if not reward.program_id.is_payment_program:
                 # Rewards cannot be partially offered to customers
                 points = points // reward.required_points * reward.required_points
             max_discount = min(max_discount,