The product matrix was recently converted to OWL but the design was not adapted to v16 style. This commit revamps the table to better fits Odoo 16 design. The previous table had issue with wrong color in dark mode and the table head title were not aligned with the inputs. task-3074063 closes odoo/odoo#107102 Related: odoo/enterprise#34743 Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>