Partial Refund Fails to Adjust Donor and Campaign Totals

[monsorIT]

Issue Summary:

The partial refund functionality is not working as expected. When a partial refund is processed for a donation order:

• The donor's contribution amount in the Admin Panel > Donors tab is not decreasing according to the refunded amount.
• On the Product (Campaign) page in the User Panel, the total donated amount is also not updated to reflect the partial refund.

Steps to Reproduce:

1. Create and configure a new Campaign.
2. Assign the campaign to a donation-based product.
3. Place an order with a donation amount.
4. In the Admin Panel, process a partial refund for the order.
5. Go to the Donors tab in the Admin Panel:

• The donor's contribution amount remains unchanged instead of reflecting the partial refund.

6. Go to the donation product page in the User Panel:

• The total donated amount displayed is not adjusted to account for the refunded amount.