[IMP] base: Don't set customer=True on new users

Purpose
=======

Create a user, then the partner is shown in Customers.

Most of the time, user is not a customer.

odoo/addons/base/models/res_users.py

@@ -426,6 +426,7 @@ class Users(models.Model):
     @api.model_create_multi
     def create(self, vals_list):
         users = super(Users, self).create(vals_list)
+        users.write({'customer': False})
         for user in users:
             user.partner_id.active = user.active
             if user.partner_id.company_id: