Updates link on order thank-you page to take customers to My Account > Subscriptions

[mattallan]

Description

Requested in slack here: p1731689382911189-slack-C07CBV7SKPH

After purchasing a subscription product, we tell customers to view their subscription status from their account page. Clicking the link currently takes you to the main myaccount page and then you have to navigate to subscriptions from there.

This PR updates this link to take the customers directly to their my-account/subscriptions page to view their subscription.

How to test this PR

1. Purchase a subscription product
2. On the Order Received page, click on link in "View the status of your subscription in your account"
3. While on this branch, confirm you're redirected to the View subscriptions page:
   

Product impact

• Added changelog entry (or does not apply)
• Will this PR affect WooCommerce Subscriptions? yes/no/tbc, add issue ref
• Will this PR affect WooCommerce Payments? yes/no/tbc, add issue ref
• Added deprecated functions, hooks or classes to the spreadsheet

[Mayisha]

Looks good to me. This is working as described 👍