Purpose ======= When we create a new record, we can change the definition on the definition record. If the parent had no definition, in `_add_default_values`, we just return the value. But in some weird cases, if we have invalid properties name in the value, the will be written in database. Now, in that particular case, we propagate the value only if we try to change the definition. Part-of: odoo/odoo#120457