[FIX] sale_stock: New SO line when validating the related invoice

Steps to reproduce the bug:

- Let's consider a storable product P with automatic inventory valuation and re-invoicing policy at cost
- Create a SO with P, generate an invoice I and validate I

Bug:

A new line was added in the SO (related to the anglo saxon move line)

PS: In 12.0, no line was added on the SO when I was validated.

opw:2247915

closes odoo#52873

Signed-off-by: Simon Goffin (sig) <[email protected]>

addons/sale_stock/models/account_move.py

@@ -99,6 +99,11 @@ def _filter_outgoing_sml(ml):
 class AccountMoveLine(models.Model):
     _inherit = "account.move.line"
 
+    def _sale_can_be_reinvoice(self):
+        self.ensure_one()
+        return not self.is_anglo_saxon_line and super(AccountMoveLine, self)._sale_can_be_reinvoice()
+
+
     def _stock_account_get_anglo_saxon_price_unit(self):
         self.ensure_one()
         price_unit = super(AccountMoveLine, self)._stock_account_get_anglo_saxon_price_unit()