[FIX] purchase: fix notification layout wrongly reset
[FIX] purchase: fix notification layout wrongly reset

Commit e38ed7c780d35fb9d5d799ac783048616362702f moved code related to purchase, stock and
purchase_stock in order to clean module dependencies. However probably due to
some wrong manipulation notification layout was reset to an old removed
layout. This commit fixes it.

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