[FIX] stock_account: force company when getting computed account for move line

The parent method _get_computed_account in the account module it already forces
the company to get the correct account, but in the stock_account module the method
is overriden when dealing with anglo-saxon accounting. In the latter, the company
is not being forced, so it leads to multi-company errors.

The fix simply enforces the correct company to prevent the error.

closes odoo/odoo#75747

X-original-commit: beba7c5b377e5aaf5ccb1d52e6b8c3bcf49468d3
Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>

addons/stock_account/models/account_move.py

@@ -223,6 +223,7 @@ class AccountMoveLine(models.Model):
         # OVERRIDE to use the stock input account by default on vendor bills when dealing
         # with anglo-saxon accounting.
         self.ensure_one()
+        self = self.with_company(self.move_id.journal_id.company_id)
         if self.product_id.type == 'product' \
             and self.move_id.company_id.anglo_saxon_accounting \
             and self.move_id.is_purchase_document():