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

[ThisIsMani]

Feature Description

We have recently 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/2bc8756e061e9e0e705ce2c6b533c3583f3efa8b/crates/router/src/services/authentication.rs#L91 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.

Have you spent some time checking if this feature request has been raised before?

• [X] I checked and didn't find a similar issue

Submission Process:

• Ask the maintainers for assignment of the issue, you can request for assignment by commenting on the issue itself.
• Once assigned, submit a pull request (PR).
• Maintainers will review and provide feedback, if any.
• Maintainers can unassign issues due to inactivity, read more here.

Refer here for Terms and conditions for the contest.