[16.0] autovacuum_message_attachment incompatible with account_accountant

[marepust]

Module: autovacuum_message_attachment
Version: 16.0

Description:
When autovacuum_message_attachment module is installed on Odoo v16 with enterprise module account_accountant it break bank.rec.widget.

Steps to reproduce:

• install autovacuum_message_attachment
• open "account.bank.statement.line" (/web?debug=1#menu_id=164&cids=7&active_id=44&model=account.bank.statement.line&view_type=kanban) form view
• click anywhere on page
• that will trigger API call (web/dataset/call_kw/bank.rec.widget/onchange) that will return error:
  ValueError: Wrong value for bank.rec.widget.line.assigned_attachment_ids: ir.attachment()

request: bank.rec.widget_err_request.txt
response: bank.rec.widget_err_response.txt