[backport IE fixes to 1.7] allow for IE9+ async focus in !ComboBox and !FilteringSelect test, refs #16926

git-svn-id: http://svn.dojotoolkit.org/src/dijit/trunk@31121 560b804f-0ae3-0310-86f3-f6aa0a117693
(cherry picked from commit fbec15cae397b80cec54682cb40858a4e125050b)
(cherry picked from commit 902b314bfcd6a6138781740656c09083e3b01c24)