[FIX] purchase_stock: ignore tax calculations in tests

The tests in the purchase_stock module include some tests that make sure or
depend on the fact that the price_unit from the generated move lines equals the
price_unit from the purchase order line from which they were created.

However, the price_unit in the move lines exclude taxes (at least those that
have an account set, it uses the total_void computed from the purchase order
line). This means some tests will fail if an installed localization defines
taxes that are included in the price.

The problem is resolved by explicitly creating the test product used in those
tests without supplier taxes.

opw-3033340

closes odoo/odoo#104672

Signed-off-by: Adrien Widart <awt@odoo.com>

addons/purchase_stock/tests/test_stockvaluation.py

@@ -25,6 +25,8 @@ class TestStockValuation(TransactionCase):
             'name': 'Large Desk',
             'standard_price': 1299.0,
             'list_price': 1799.0,
+            # Ignore tax calculations for these tests.
+            'supplier_taxes_id': False,
             'type': 'product',
         })
         Account = self.env['account.account']