[IMP] website_sale: use env with new context for performance
[IMP] website_sale: use env with new context for performance

The products don't need to use with_context because the pricelist and partner is already in the context; this change allow to use the cache.

hip-odoo/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,ygol/odoo,dfang/odoo,dfang/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,ygol/odoo,dfang/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo