fix: Fix module allowners and moderated rooms.

resources/prosody-plugins/mod_muc_allowners.lua

 --      -> true, room_name, subdomain
 --      -> true, room_name, nil (if no subdomain is used for the room)
 local function is_moderated(room_jid)
-    if #moderated_subdomains == 0 and #moderated_rooms == 0 then
+    if moderated_subdomains:empty() and moderated_rooms:empty() then
         return false;
     end
 

resources/prosody-plugins/mod_muc_domain_mapper.lua

 end
 
 function filter_session(session)
-    module:log("warn", "Session filters applied");
+    -- module:log("warn", "Session filters applied");
     filters.add_filter(session, "stanzas/out", filter_stanza);
 end