[FIX] point_of_sale: download invoice from POS

When you are creating an invoice from the POS, the report route is
called to download the invoice, since changes made in rev: 118190f3

The values for ids where empty, so we give them now the correct id list.

closes odoo/odoo#35889

Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>