fix(payment_link): render SDK for status requires_payment_method

[kashif-m]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

• Fix bug for not allowing the SDK to render for PaymentIntent status requires_payment_method
• Remove modern JS features (ES6 and ES6+) to support older browsers

Additional Changes

• This PR modifies the API contract
• This PR modifies the database schema
• This PR modifies application configuration/environment variables

Motivation and Context

How did you test it?

Test Case

use the curl below to generate payment_link and check whether the payment link is opening test few transactions aswell

curl --location 'https://sandbox.hyperswitch.io/payments' \ --header 'Content-Type: application/json' \ --header 'Accept: application/json' \ --header 'api-key: snd_RrnVYK6c3puJkhYm3seCFACIpJuKjG5ZkydUP9fbPFAqVYiYCaSgQXqYQLsTwMUM' \ --data '{ "amount": 3423, "currency": "USD", "confirm": false, "customer_id": "sahkal", "return_url":"https://google.com", "description": "For selling Tea", "order_details":[{ "product_name":"Tea", "quantity":1, "amount":10, "product_img_link":"https://thumbs.dreamstime.com/b/indian-tea-spices-masala-chai-33827904.jpg" }, { "product_name":"Tea", "quantity":1, "amount":10, "product_img_link":"https://thumbs.dreamstime.com/b/indian-tea-spices-masala-chai-33827904.jpg" }, { "product_name":"Tea", "quantity":1, "amount":10, "product_img_link":"https://thumbs.dreamstime.com/b/indian-tea-spices-masala-chai-33827904.jpg" }, { "product_name":"Tea", "quantity":1, "amount":10, "product_img_link":"https://thumbs.dreamstime.com/b/indian-tea-spices-masala-chai-33827904.jpg" }, { "product_name":"Tea", "quantity":1, "amount":10, "product_img_link":"https://thumbs.dreamstime.com/b/indian-tea-spices-masala-chai-33827904.jpg" }], "payment_link_object": { "link_expiry" : "2025-10-09T16:23:10Z", "merchant_custom_domain_name": null, "custom_merchant_name": "sahkal" } }'

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code
• I added unit tests for my changes where possible
• I added a CHANGELOG entry if applicable