[FIX] core: validation of field parameters

The feature was actually not working as expected.  It has been fixed,
and a test now ensures it does work as expected.  This commit also fixes
some invalid parameters, hopefully nothing critical.

closes odoo/odoo#60402

Related: odoo/enterprise#14273
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>