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:

Add items to the cart and proceed to checkout.
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]

Start at the Enatega customer app's order checkout screen and trace how the displayed total is assembled. Verify which subtotal, tax, delivery charge, discount, and voucher values are available, then confirm the screen shows each applicable component and the final amount clearly.

Written by the indexing model from the issue text.