WooCommerce Memberships 1.27.2

* Dev - Adds a filter to help third party code handle product discounts when a product is on sale

* Fix - When using the `wcm_product_discount` shortcode, ensure that the percentage discount amount is not miscalculated while a member is logged in

* Tweak - Pass the full product instance to `wc_memberships_exclude_product_from_member_discounts` filter instead of product ID when checking cart item member discounts
* Fix - Update usage of deprecated `block_categories` filter to address notices since WP 5.8