[IMP] mrp_account: prevent grouping slv from MO
[IMP] mrp_account: prevent grouping slv from MO

Prevent the group by product in the stock valuation layer when
we coming from a MO form via the button "Stock Valution".

task-2241471

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo