All Submissions:

• Have you followed the WooCommerce Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

This PR implements a new design for the WooCommerce > Subscriptions (experiment) page.

Before	After

Please see #32691 for more information.

How to test the changes in this Pull Request:

0. Checkout this branch and run pnpm nx build-watch woocommerce-admin to build assets
1. With WooCommerce Payments and WooCommerce Subscriptions inactive, navigate to WooCommerce > Subscriptions
2. Observe the new design. There shouldn't be any spelling mistakes or layout issues.
3. Clicking the "Get started" button should function as per before, i.e. it downloads and installs the WooCommerce Payments plugin.
4. The existing error handling should continue to work. See Display an error message when WC Payments fails to install via the Subscriptions menu item #32852 for testing instructions.

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?
• Have you created a changelog file by running pnpm nx affected --target=changelog?

FOR PR REVIEWER ONLY:

• I have reviewed that everything is sanitized/escaped appropriately for any SQL or XSS injection possibilities. I made sure Linting is not ignored or disabled.