[FIX] l10n_it_edi_sdicoop: avoid tracebacks when no file, batching

When we ack a file for having correctly received the response e.g.,
the file is deleted on the server and will not have a file key in the reponse,
at least before the server itself will have a new response to share.

Before, it would traceback, while now, we do nothing.  (as we are still waiting)

Also, when we get the notice that the term of 2 weeks is passed, it means
it is successfull.

Also, for the batching we had a traceback, because it was possible to have
a batching mixing step 1 and step 2, which fails doing invoices.l10n_it_edi_transaction

So we added whether there is a tranaction or not in the batch key.

opw-2703669

closes odoo/odoo#82298

Signed-off-by: William André (wan) <wan@odoo.com>