[FIX] account: don't mess the invoice status
[FIX] account: don't mess the invoice status

Since the invoice validation is well separated from the account entries creation (and made before), the chatter was showing too much status change upon an invoice validation.
This commit makes sure we never consider an invoice paid when its move hasn't been created yet.

closes odoo/odoo#31100
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo