partial fix for #108751.

the SearchDialog no longer includes dialogOverlay.xul, so this function is not defined.

r/sr=bienvenu

mailnews/base/search/resources/content/SearchDialog.js

@@ -217,7 +217,6 @@ function searchOnLoad()
 
   onMore(null);
   document.commandDispatcher.updateCommands('mail-search');
-  moveToAlertPosition();
 
   // hide and remove these columns from the column picker.  you can't thread search results
   HideSearchColumn("threadCol"); // since you can't thread search results