[FIX] base: display correct ondelete value
[FIX] base: display correct ondelete value

The on_delete value on an ir.model.field did not reflect the value set on the
field loaded in the registry

Fixes odoo/odoo#24464

closes odoo/odoo#27906
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo