[FIX] core: update of one2many field on new record with origin

When setting the inverse many2one field on a record, the record is not
removed from its inverse relation if the field's current value is not in
cache.  Fix this by setting the field's value in cache before updating.

closes odoo/odoo#54655

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>