[FIX] website_sale_delivery: delivery amount

- Go to the website settings and activate the option 'Tax-Included' for
the pricing in the website.
- Go to Sales > Configuration > Delivery methods and create a new method
based on rules. For example:
Price is 10.0 when the weight <= 100
Attach a product (with taxes) to it.
- Publish on website
- Buy a product on the eCommerce
- Checkout, go up to payment step and choose the delivery method created

The 'Delivery:' field on the left shows the delivery price with taxes
excluded although they are included. Funny thing: going back to the
'Address' step show the correct price.

This is because the `delivery_price` field does not take into account
the tax configuration.

We can use the `amount_delivery` field (hum hum) which does it
correctly.

opw-1981808

closes odoo/odoo#33394

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/website_sale_delivery/controllers/main.py

@@ -69,7 +69,7 @@ class WebsiteSaleDelivery(WebsiteSale):
             return {'status': order.delivery_rating_success,
                     'error_message': order.delivery_message,
                     'carrier_id': carrier_id,
-                    'new_amount_delivery': self._format_amount(order.delivery_price, currency),
+                    'new_amount_delivery': self._format_amount(order.amount_delivery, currency),
                     'new_amount_untaxed': self._format_amount(order.amount_untaxed, currency),
                     'new_amount_tax': self._format_amount(order.amount_tax, currency),
                     'new_amount_total': self._format_amount(order.amount_total, currency),