Unsubscription requests waiting moderator approval are not visible in Postorius
If a list's unsubscription policy is moderate
or confirm_then_moderate
and a user unsubscribes via email and confirms if necessary, a notice is sent to the list owners/moderators, but this notice contains no token to be used in approving the request, nor is the request visible in Postorius Subscription requests.
It is possible for the owner to just unsubscribe the user via the Postorius member list, but it should be possible for the owner to approve the unsubscription.