Fatal error can occur in subscription-totals-table.php

[nicdwilson]

Describe the bug

In subscription-totals-table.php we create a product object here

The is filtered by woocommerce_subscriptions_order_item_product, and we check the status of the object before using it here

However, it is subsequently used without a check here

On rare occasions, where the value has been filtered, such as in 9093977-zd-a8c, this can result in a fatal error.

Uncaught Error: Call to a member function get_purchase_note() on bool in /www/[redacted]/public/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/templates/myaccount/subscription-totals-table.php:79  

To Reproduce

1. Return false on woocommerce_subscriptions_order_item_product
2. Check the view subscription page in My Account

Actual behavior

Improper use of the filter can have unexpected results.

Product impact

• [ yes] Does this issue affect WooCommerce Subscriptions? yes/no/tbc, add issue ref
• [ no] Does this issue affect WooCommerce Payments? yes/no/tbc, add issue ref