Use returntomenu(timetrials) instead of returnmenu in timetrialcomplete3

This fixes a corner case where using gamestate 82 from the editor would
put you in a softlock because it would return to the editor settings
menu, which only functions in EDITORMODE and results in a softlock in
TITLEMODE.

desktop_version/src/Input.cpp

@@ -1372,7 +1372,7 @@ void menuactionpress()
             //back
             music.playef(11);
             music.play(6);
-            game.returnmenu();
+            game.returntomenu(Menu::timetrials);
             map.nexttowercolour();
             break;
         case 1: