[FIX] payment_payulatam: fix transaction reconsiliation

The reconsiliation code was looking for the aquirer_reference instead of
the reference to find out the corresponding transaction. Which leads to
not finding the corresponding transaction.

This behavior comes from the creation of the moule setting its own tests
in error in PR: https://github.com/odoo/odoo/pull/24802

closes odoo/odoo#31365