[FIX] base: field 'Type' readonly
[FIX] base: field 'Type' readonly

The field 'Type' should always be readonly since:
- it must not be changed for standard models
- its value must be 'Custom Object' for a custom model

opw-706130

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