[FIX] fields: in `_setup_default`, do not lookup `_default` in model classes
[FIX] fields: in `_setup_default`, do not lookup `_default` in model classes

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