reinstate rev 1.38 without breaking testgtkembed: focus and notify all common dialogs. somewhat experimental fix for bug 53345. r=pinkerton,sfraser

xpfe/global/resources/content/commonDialog.js

@@ -182,6 +182,9 @@ function commonDialogOnLoad()
       break;
     }
   }
+
+  focus();
+  GetAttention();
 }
 
 function setCheckbox(aChkMsg, aChkValue)