[REFACTOR] Use `MerchantJwtWithProfileId` instead of `MerchantJwt` in Authentication data

Feature Description

We have introduced MerchantJwtWithProfileId to the AuthenticationData enum. The new variant includes both a profile_id and a non-optional user_id field, improving upon the older MerchantJwt variant. The goal of this issue is to replace all instances of MerchantJwt with MerchantJwtWithProfileId.

You can find the location of MerchantJwt here: https://github.com/juspay/hyperswitch/blob/1ff66a720b29a169870b2141e6ffd585b4d5b640/crates/router/src/services/authentication.rs#L128 MerchantJwtWithProfileId is located just under it.

Possible Implementation

• Refactor the existing codebase to replace occurrences of MerchantJwt with MerchantJwtWithProfileId.
• Ensure that merchant_id, user_id, and profile_id (where necessary) are properly handled in the updated variant.

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• I checked and didn't find a similar issue

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