I want to enable 'Free Sign Up' (auth_signup_uninvited = 'b2c') by default.

I use a config file and pretty naively, I have added this line:

auth_signup_uninvited = b2c

But nothing changed.

I realised that on the file odoo/addons/website/models/res_config_settings[dot]py the field ​'auth_signup_uninvited' has its attribute 'config_parameter' set to 'False'.

Is there a way to configure this behavior in Odoo 16 ?