IE10 popup test failures

[haysmark]

 ------------------------------------------------------------
 GROUP "no hidden tab stops" has 1 test to run
     Error: Unable to get property 'id' of undefined or null reference
     ERROR IN:
 		 function hiddenTabStops(){
				var tabbable = tabOrder();
				doh.is("inputAtStart", tabbable[0].id, "first tabbable node");
				doh.is("inputAtEnd", tabbable[tabbable.length - 1].id, "last tabbable node");
			}
 FAILED test: ../../dijit/tests/_base/popup.html::no hidden tab stops::hiddenTabStops 1 ms

 GROUP "no hidden tab stops" has 1 test to run
     Error: Unable to get property 'id' of undefined or null reference
     ERROR IN:
 		 function hiddenTabStops(){
				var tabbable = tabOrder();
				doh.is("inputAtStart", tabbable[0].id, "first tabbable node");
				doh.is("inputAtEnd", tabbable[tabbable.length - 1].id, "last tabbable node");
			}
 FAILED test: ../../dijit/tests/popup.html::no hidden tab stops::hiddenTabStops 0 ms

[bill]

Bulk update of IE10 tickets to 1.8.2, as per meeting. Backports to 1.4 will be handled in a separate ticket. If this ticket just requires a test update, it can be rescheduled for milestone 1.9, and checked into trunk only.

[haysmark]

Also present in 1.7.

[bill]

Fixed by [29790], [29947], and [29948].

[bill]

In [30243]:

backport IE10 test fix [29790] to 1.6 branch, refs #16122, #16130 !strict.