Users were not able to access the product (product/template) form view when the product was readonly (cf product_updatable field logic). This commit makes sure that a user can always access the product form view through either the external button or clicking on the product field itself (when readonly). Task-3063622 closes odoo/odoo#107237 X-original-commit: 7bf45b022e73a83d9b04350b8899919714e59223 Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com> Co-authored-by: Valentin Vallaeys <vava@odoo.com>