[FIX] l10n_mx_edi_vendor_bills/customer: Avoid recalculate taxes.

When a CFDI has more decimals that Odoo, when you try to re-calculate the taxes, an error is shown because the amounts could change.

Error: No se puede crear una entrada de diario no balanceada.. Ids: [209]

Diferencias débito - crédito: [0.08]

Now was fixed

Copies from: https://git.vauxoo.com/vauxoo/vendor-bills/-/commit/e80fb05f57ae53b9b92a35175f539602aa76907a