[FIX] stock: add stock group on product form view
[FIX] stock: add stock group on product form view

A user without stock acces rights was not able to read the fields
added by the stock module

The statbuttons display the number of items available which are
computed fields An accountant (no inventory or sale access rights),
opening the product view will trigger the recompute which will fail
(no access on stock.warehouse.orderpoint)

closes odoo/odoo#32499

Signed-off-by: Martin Trigaux (mat) <cc7c5be316e48d137cbb549833b85d91034d799d@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo