Original PR description

**PROBLEM**
Swedbank requires the RfdDocAmt Element for Bankgiro account. [documentation](https://internetbank.swedbank.se/ConditionsEarchive/download?bankid=1111&id=WEBDOC-PRODE211415244). Payment batches generated by Odoo don't contains this fields, meaning they are refused by the bank.

**REPRO STEPS**
We can't reproduce the error the client have because it would require a valid bankgiro account. To generate the payment batch xml you have to:
1. Install l10n_se.
2. Create a vendor bank account of type bankgiro.
3. Create a vendor payment with this vendor bank account.
4. Create a batch payment and validate it.
5. There should be a xml in the chatter, you can look at it to see there is no RfdDocAmt element.

opw-5427505

Forward-Port-Of: odoo/enterprise#104777