* Fix - Correctly updates a subscription status to `cancelled` during a payment failure call when the current status is `pending-cancel`.
* Fix - Clear the `cancelled_email_sent` meta when a subscription is reactivated to allow the customer to receive future cancellation emails.
* Fix - Prevent deprecation notices after updating to WooCommerce 9.3.
* Fix - Prevent PHP fatal error that occurs when calculating the total tax refunded on a subscription.
* Dev - Only initialise the `WCS_WC_Admin_Manager` class on stores running WC 9.2 or older. This class handled integration with the Woo Navigation feature that was removed in WC 9.3.
