[IMP] web: test readonly attr on list field's node
[IMP] web: test readonly attr on list field's node

This works since a recent commit, which wasn't designed to solve
this issue, as we weren't aware of it.

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