WooCommerce Pre-Orders 2.2.0

* Add - Support for the new Product Block Editor.
* Dev - Bump WooCommerce "tested up to" version 8.6.
* Dev - Bump WooCommerce minimum supported version to 8.4.
* Dev - Bump PHP minimum supported version to 7.4.

* Fix - Block errors while editing the Cart and Checkout pages.
* Dev - Added E2E tests for the "Enable pre-orders for products that get out of stock" setting.
* Dev - Bump WooCommerce "tested up to" version 8.5.
* Dev - Bump WooCommerce minimum supported version to 8.3.
* Dev - Bump WordPress minimum supported version to 6.3.

2.0.8