This fix ensures that new payments created through online account synchronization use the correct company together with the selected journal. It prevents payment records from being created with missing or mismatched company information, reducing accounting inconsistencies.

When creating a new payment, we need to specify the company along with the journal.
Even if the company is normally computed, it isn't the case here because of protection of fields with the `_inherits` feature, along with a de-normalized field.