I usually ask to add GENDER support to messages, but in the case of Notification-dynamic-actions-mute-page-linked and Notification-dynamic-actions-unmute-page-linked I think that it perhaps should be removed.
The action is an imperative or bare infinitive verb for an action that is requested by the human and performed by the software. We don't have gender for Edit, Move, Delete, and many other such buttons, and I don't think that we should have it for Mute.
However, if anyone thinks that these are substantially different and should have gender, feel free to decline.