Incorrect payment amount for business customers (B2B) - Net amount instead of gross amount sent to Stripe

[RobinTheHood]

When a business customer (B2B) attempts to pay via the Stripe module, only the net amount (Netto) is transmitted to Stripe instead of the gross amount (Brutto). Although business customers must also pay the gross amount (VAT inclusive - the display is just different in the shop), the incorrect amount is being sent to Stripe.