[3792792]x_studio_total_amount_no_vat

#Done by RHT on the 07/03/2024
#Reviewed by EMI on the 03/04/2024
#Review:
#911 task: https://www.odoo.com/web#id=3792792&cids=1&menu_id=4720&action=333&active_id=5686&model=project.task&view_type=form
#Need: to know the discounted amount
for inv in self:
    inv["x_studio_total_amount_no_vat"] = inv.amount_untaxed + inv.x_studio_discount