Steps to reproduce:
-------------------
- being in a multi-company environment;
- have one product made that is first in alphabetical
order of "Internal Reference" throughout the database (e.g. [AAA]);
- make this product specific to one of the companies
(set the "Company" field on the product template)
- go into a different company within the database
(not the one set on this product);
- create a new discount & loyalty record, and set
the "Program Type" to "Discount Code".
Issue:
------
An access rights error occurs.
Cause:
------
When creating a `promo_code` program, we use the first product
that can be sold in the default reward values.
Solution:
---------
Take into account the company in the domain that retrieves
the default product.
opw-3538516
closesodoo/odoo#139008
X-original-commit: d80c28c78bf3237e2526a6370f9c6c0b0f8dc232
Signed-off-by: Thomas Lefebvre (thle) <thle@odoo.com>