[FIX] account: exchange rate date
[FIX] account: exchange rate date

The fields `amount_total_company_signed` and `amount_untaxed_signed` are
always converted using the exchange rate of today.

opw-688838

dfang/odoo,ygol/odoo,dfang/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,bplancher/odoo,ygol/odoo,laslabs/odoo,laslabs/odoo,laslabs/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,microcom/odoo,storm-computers/odoo,laslabs/odoo,bplancher/odoo,microcom/odoo,bplancher/odoo,bplancher/odoo,ygol/odoo,microcom/odoo,microcom/odoo,Elico-Corp/odoo_OCB,storm-computers/odoo,microcom/odoo,hip-odoo/odoo,bplancher/odoo,bplancher/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,storm-computers/odoo,ygol/odoo,Elico-Corp/odoo_OCB,storm-computers/odoo,storm-computers/odoo,dfang/odoo,storm-computers/odoo,hip-odoo/odoo,ygol/odoo,Elico-Corp/odoo_OCB,dfang/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,microcom/odoo,dfang/odoo,ygol/odoo,laslabs/odoo,hip-odoo/odoo