[FIX] website_sale: hide horizontal rule if there is no availability warning
[FIX] website_sale: hide horizontal rule if there is no availability warning

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