This update improves the customer portal experience for sales and deliveries by showing delivery tracking information more clearly and making return labels available beyond a single carrier. It also allows more precise delivery margin percentages, helping businesses manage shipping costs with finer control.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




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FedEx delivery return labels now rely on the standard delivery module setup instead of separate FedEx-specific fields. This reduces duplicate configuration and makes return label handling more consistent across delivery providers.

As generation of return label is now managed through the delivery
module, we removed the specific fields that are set in fedex module to
use the one created in delivery