[FIX] account_edi_ubl_cii: line id start at 1 in UBL

In Saudi Arabia, the InvoiceLine/ID should not be greater than 6 digits.
Using the move.line_id, this limit can be exceeded.

Simply count the invoice line ids starting from 1 instead.

In master, add a parameter `line_id` to `_get_invoice_line_vals`.

closes odoo/odoo#133590

Signed-off-by: Josse Colpaert <jco@odoo.com>