Ensure notifications are dismissed

Before this change if you joined a project without clicking on the
notification it would never disappear.

Fix a related bug where if you have more than one monitor, the
notification was only dismissed from one of them.

crates/collab_ui/src/collab_titlebar_item.rs

@@ -948,7 +948,7 @@ impl CollabTitlebarItem {
     fn render_face_pile(
         &self,
         user: &User,
-        replica_id: Option<ReplicaId>,
+        _replica_id: Option<ReplicaId>,
         peer_id: PeerId,
         location: Option<ParticipantLocation>,
         muted: bool,