Before this commit, the "Your contact" details in the portal
layout were not shown if the user_id (salesperson) was not set
on the portal user's partner.
In order for them to have contact info in that case, we now use
as a fallback contact the one responsible of their company, i.e.
the first company in the parent hierarchy (corresponding to the
commercial_partner_id field).
We still do not use the user if it they are a public user.
Task-3213421
closesodoo/odoo#114599
Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>
Noe Antoine
554b31eec7