[FIX] point_of_sale: fix included -> excluded tax mapping

- Create a sale tax T1, 0% included in price
- Create a sale tax T2, 15%
- Create a product PROD1 with a sale price of 10 and T1
- Create a fiscal position FPOS and map T1 to T2
- Go to POS
- Select PROD1:
    - Without FPOS the price should be 10 and tax 0
    - With FPOS, price should be 10 and tax 1.5

POS calculate the tax twice, makeing the price 11,50 and an extra tax of
15% to 13,23.

This is a fine tuning of 1baa774bc7a1d6cabcb3d61ff19ec2d6010fbd6a
to distinguish between included-excluded tax after mapping and avoid the
double computation.

opw-2374247

closes odoo/odoo#61600

X-original-commit: 65c5b54c19e66674d3df35b651059632c452a6c7
Signed-off-by: agr-odoo <agr-odoo@users.noreply.github.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index e2df08d9e8d..ed4b5318edf 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -2301,7 +2301,9 @@ exports.Orderline = Backbone.Model.extend({
             var self = this;
             _(taxes).each(function(tax) {
                 var line_taxes = self._map_tax_fiscal_position(tax);
-                new_included_taxes = new_included_taxes.concat(line_taxes)
+                if (line_taxes.length && line_taxes[0].price_include){
+                    new_included_taxes = new_included_taxes.concat(line_taxes);
+                }
                 if(tax.price_include && !_.contains(line_taxes, tax)){
                     mapped_included_taxes.push(tax);
                 }