Teams for Woocommerce Memberships 1.7.4

* Misc - Add support for WooCommerce 4.1

* Fix - Do not trigger a WordPress hook deprecation notice when visiting posts admin screens in WordPress 5.4

* Fix - Prevent fatal error triggered while processing a subscription renewal from the admin dashboard
* Fix - Prevent number of seats to increase on teams with per-team pricing when a subscription renewal is processed
* Fix - Fix a logic error that could cause renewal links for team memberships not to work