feat: Fully ignore ACLs that deny everyone

src/service/rooms/event_handler/acl_check.rs

@@ -25,10 +25,8 @@ pub async fn acl_check(&self, server_name: &ServerName, room_id: &RoomId) -> Res
 		return Ok(());
 	}
 
-	if acl_event_content.deny.contains(&String::from("*"))
-		&& acl_event_content.allow.contains(&String::from("*"))
-	{
-		warn!(%room_id, "Ignoring broken ACL event (allow key and deny key both contain wildcard \"*\"");
+	if acl_event_content.deny.contains(&String::from("*")) || acl_event_content.deny.is_empty() {
+		warn!(%room_id, "Ignoring broken ACL event (everyone is banned)");
 		return Ok(());
 	}