WooCommerce Conditional Shipping and Payments 2.0.3

* Important - Declared compatibility with WooCommerce 4.1.
* Feature - Added 'Product On Sale' condition.
* Fix - Restrictions toggle not working due to a recent regression.
* Fix - Warning at checkout when using the Klarna Payments gateway.
* Tweak - Added 'WC_CSP()->plugin_initialized()' method.
* Tweak - Ensure that the sw-select script is loaded before displaying notices.
* Tweak - Enter custom shipping rate IDs with a delimiter character by wrapping it in '%', like '%|%'.

* Important - Declared compatibility with WooCommerce 4.0.
* Feature - Added 'woocommerce_csp_package_item_quantity_count' filter. This filter can be used to limit the Package Item condition to specific package items.

* Fix - Ensured restricted shipping rates are correctly identified by falling back to `get_id` when a canonical rate ID cannot be constructed.