[FIX] account: Set default for invoices

In 12.0, the function onchange_default defined in odoo/models.py
was triggered on model 'account.invoice' for the fields type, company_id,
partner_id

In 13.0, as the model 'account.invoice' has been removed by 'account.move',
the same logic must be applied on this model.

opw:2086812

closes odoo/odoo#38849

Signed-off-by: Simon Goffin (sig) <sig@openerp.com>