[IMP] note: improve demo data as demo user now correctly have stages
[IMP] note: improve demo data as demo user now correctly have stages

Done after feedback from saas-11.3 internal testing phase. This commit is
linked to task ID 1838917.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo