Fixes https://github.com/odoo/odoo/issues/37998 Follow up on https://github.com/odoo/odoo/commit/5c4544fb2943e63fc1e0f5ae1e7e250a5a2b2cf1 As Integer fields are Supported for "Group By", they should be used as Group name closes odoo/odoo#38007 Signed-off-by: lul-odoo <LucasLefevre@users.noreply.github.com>