As provider references are included in the memo of `account.payment` records, it makes sense to set one on demo transactions to mimic what is done with other providers. task-3063368 closes odoo/odoo#106486 X-original-commit: 73865f2bd03c7d224f0a64659652e8e40c4ba192 Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com> Signed-off-by: Horacio Tellez Perez (hote) <hote@odoo.com>