[14.0] account_banking_pain_base: Wrong length in AdrLine

[jonerikceberio]

When generating the PAIN file, the second node AdrLine is generated as the join of zip and city. Both fields are limited to 70 char in the process, but then are joined, which can result in a >70 char AdrLine, and therefore in an error:
odoo.addons.account_banking_pain_base.models.account_payment_order: Element '{urn:iso:std:iso:20022:tech:xsd:pain.008.001.02}AdrLine': [facet 'maxLength'] The value has a length of '76'; this exceeds the allowed maximum length of '70'

To Reproduce:

• Create a partner with zip and city, and length of the city field with a length of 70.
• Create an invoice to that partner
• Add the invoce to a payment order
• Generate the file, which will turn into an error

Possible solution:

• Modify line 550, slicing the result of the join to 70
• Modify line 546, substracting to 70 the length of the first element in val (if it exists) + 1 (for the space of the join)

[github-actions]

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[alexis-via]

I confirm this very stupid bug. It was introduced by @luc-demeyer in this commit 198fc3c
I fixed yesterday it in my v16 PR #1174 (I re-wrote the code for address block generation ; it implements both structured and unstructured and I found and fixed the bug in the unstructered code).