* Add coupon link instead of dropdown in Cart and Checkout blocks
* Fix state names used for displaying the link and coupon form
* Fix storybook for coupon block
* Fix unit test for coupon block
* Fix css and accessibility
* Fix coupon block position on Checkout
* Update e2e test cases for coupon block (https://github.com/woocommerce/woocommerce-blocks/pull/8022)
* Update e2e test cases for coupon block
* Fix perfomance test for coupon block
* Fix double await typo
* Fix perfomance test for coupon block
* Remove CSS
* Use classnames to add and remove classes
Improved the code to use classnames to add and remove classes. Also, moved the logic to handle click and submit to separate functions.