[FIX] account: sequence of AML

When printing an invoice, the order of the lines not always match the
order in the interface.

It occurs because `account.move.line` contains a `sequence` field which
is taken into account in the UI but not used in the report. Note that
commit 0a5955bf explicitly removed from the `_order`.

opw-2145878
opw-2147922

closes odoo/odoo#41380

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>