[FIX] account: sign columns amount_untax and amount_tax

In the tree view for account.invoice, two columns are signed
(amount_total and residual) and two columns are not signed
(amount_untaxed and amount_tax).

Now, all the columns with numeric values are signed.

This commit reverts the commit : 622af0b7

opw-1964348

closes odoo/odoo#33097

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