[IMP] crm_livechat: add country from visitor to lead

Issue
-----
Automatic assignation assign leads mostly based on country.
So far the country need to be set manually on the lead.

Solution
--------
Since we have the information on the website vistor
works, set the country on the lead from the visitor
website. Unless the visitor is link to a partner
with a country. In that case setting a country
will cancel the address sync from the partner to the lead.

closes odoo/odoo#59575

X-original-commit: eff2b357db179e6e62f3db58ca2d90cc61c3748f
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/website_crm_livechat/models/mail_channel.py

@@ -15,4 +15,5 @@ class MailChannel(models.Model):
         visitor_sudo = self.livechat_visitor_id.sudo()
         if visitor_sudo:
             visitor_sudo.write({'lead_ids': [(4, lead.id)]})
+            lead.country_id = lead.country_id or visitor_sudo.country_id
         return lead