Enatega Customer App: There should be all the details related to the total amount on order checkout screen

### Describe the bug

Some cost components (such as taxes, delivery fees, or discounts) may be missing.
The final total may be displayed without a clear breakdown.
Users might not be sure how the total amount was calculated.
Steps to Reproduce:

1. Add items to the cart and proceed to checkout.
2. Observe whether all cost components (subtotal, taxes, delivery fee, etc.) are displayed.

### Expected behavior
The checkout screen should provide a detailed cost breakdown, including:
✅ Item subtotal
✅ Taxes (e.g., VAT, GST, Service Tax)
✅ Delivery charges (if applicable)
✅ Discounts or vouchers applied
✅ Final total amount to be paid

**Desktop (please complete the following information):**

> OS: [e.g. iOS]
> Browser [e.g. chrome, safari]
> Version [e.g. 22]

**Smartphone (please complete the following information):**

> Device: [e.g. All devices]
> OS: [e.g. iOS8.1]
> Browser [e.g. stock browser, safari]
> Version [e.g. 22]

Locate the Enatega customer app's checkout screen and trace how the displayed order total is assembled. Verify whether the subtotal, taxes, delivery charges, discounts or vouchers, and final total are all represented, then confirm the checkout view shows a clear breakdown for an order with applicable charges.

Written by the indexing model from the issue text.