Steps to reproduce:
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1. Install `l10n_mx_edi_pos` and set the company to Mexico.
2. In PoS, make an order with one product and pay it.
3. Open the order in the backend, click "Return Products" to make a refund, but don't pay it, cancel it instead.
4. From the same order, click "Return Products" again to make a second refund, and pay it normally.
5. Go to the orders list, select the main order and the paid refund (not the cancelled one), then Actions > Create Global Invoice.

-> Observation: error in the global invoice.

In the CFDI tab of the main order the line is "Send Global In Error", and hovering on it the detail says "Failed to distribute some negative lines".

Why:
----
When we make the global invoice, we remove the refunds from the order. A cancelled refund was never paid, so we should not count it. But we were counting it too. So we removed the refund amount twice in our case, one for the paid refund, and one for the cancelled one, and we end up with an order with negative amount that cannot be distributed.

The fix:
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We now skip the cancelled orders when we search the refunds, the same way it is done above when we collect the refunded orders.

opw-6261404

Forward-Port-Of: odoo/enterprise#127454
Forward-Port-Of: odoo/enterprise#120996