[FIX] account: Tax 0% displayed as a tax group on Invoice
[FIX] account: Tax 0% displayed as a tax group on Invoice

Steps to reproduce:

- Let's consider a sale tax T of 0% with Tax group Tax 0%
- Create an customer invoice I with one line L of 100€
- Set T on L
- Print the invoice without payment

Bug:

The tax T was displayed as a group with "Taxes on 100€" instead
of Tax 0%.

opw:2268926

closes odoo/odoo#55729

X-original-commit: 3e0defe37ef8d2081e72290d701738e1ab68d3c6
Signed-off-by: Simon Goffin (sig) <b3ed2cf313e7546085c3c50622143ff31e467d23@openerp.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo