Testing notes and ZIP for release 4.2.0

Zip file for testing: woocommerce-gutenberg-products-block.zip

Feature plugin and package inclusion in WooCommerce core

SearchListControl styles cleanup (#3604)

1. Add a Products by Attribute block in a page or post.
2. Select some attributes and verify there are no visual regressions.
3. Test it also with WP 5.4 + WC 4.3 (our oldest supported versions).

Feature plugin only

Convert saved payment methods token to a string (#3627)

1. Install and enable WooCommerce Stripe Payment Gateway.
2. With a new user, go to My Account > Payment Methods and add a new payment method.
3. Add a product to your cart and go to the checkout page.
4. Fill the details but keep the payment method as the saved card you added in step 2.
5. Try to make a purchase and verify it completes successfully and no error is shown.