[FIX] event_sale: do not copy SO information when copying a registration
[FIX] event_sale: do not copy SO information when copying a registration

When duplicating a registration its SO and SO line should not be copied as
it may impact a done or ongoing SO with payments already done.

LINKS

Task ID 2166679
PR #52334
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo