Since introduction of website_visitor,
we don't need to identifiy the lead with a lead_id cookie.
The visitor is identified and if a lead is created with the
contact form, the lead is created and linked to the visitor.
To avoid losing data, each time a visitor send a contact form,
it creates a new lead. All those leads are linked between them
via the website_visitor.
As the website_visitor already has the lang set on itself,
there is no reason to keep the lang_id of crm_lead at enterprise
side. So that lang_id on crm.lead has been moved to community.
This commit is directly linked to another one in enterprise
See https://github.com/odoo/enterprise/pull/4834 to get more details.
Task ID : 2028059
PR #34624
David Beguin
3977e28baf