Fix activity ordering incosistency

The other ordering options order from bottom to top by default, this should too.

runelite-client/src/main/java/net/runelite/client/plugins/worldhopper/WorldSwitcherPanel.java

@@ -123,7 +123,7 @@ class WorldSwitcherPanel extends PluginPanel
 				case PLAYERS:
 					return Integer.compare(r1.getUpdatedPlayerCount(), r2.getUpdatedPlayerCount()) * (ascendingOrder ? 1 : -1);
 				case ACTIVITY:
-					return r1.getWorld().getActivity().compareTo(r2.getWorld().getActivity()) * (ascendingOrder ? 1 : -1);
+					return r1.getWorld().getActivity().compareTo(r2.getWorld().getActivity()) * -1 * (ascendingOrder ? 1 : -1);
 				default:
 					return 0;