[FIX] event: Allow to override default method
[FIX] event: Allow to override default method

Without this patch, you have to redefine the field to be able to override this field.

closes odoo/odoo#33049

Signed-off-by: Thibault Delavallee (tde) <2d325771bb6e8870d87f0f3f7b45589a8338e550@openerp.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo