[BUG] API Shippingmethod endpoint method name

[downforce80]

We are currently integrating a connector between Magento and our CRM/ERP system. We have encountered an issue with the shipping method names not matching.

When we query the endpoint rest/V1/shippingmethod, it returns the shipping method name as "tig_postnl_tig_postnl".
However, in the Order details, the shipping method name appears as "tig_postnl_regular".

Steps to Reproduce:
To Reproduce
Query the rest/V1/shippingmethod endpoint.
Compare the result with the shipping method name listed in the Order details or query rest/V1/orders/{orderId}

Expected result
The rest/V1/shippingmethod endpoint should return "tig_postnl_regular" as it appears in the Order details.|

Actual result
The endpoint returns "tig_postnl_tig_postnl", leading to a mismatch that causes our integration process to fail.

Screenshots
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** Please complete the following information**

• Magento version: 2.4.4-p9
• PHP version: PHP 8.1.29
• TIG PostNL version: 1.15.2