remove waiRole and waiState from templates and use role and aria-stateName directly

[Becky Gibson]

waiRole and waiState were originally used in the templates because additional work was needed to add a namespace to these values for Firefox 2. Since we are no longer supporting Firefox 2, we can replace waiRole and waiState with the role and state attributes.

I need to better understand how the attributeList works for the widgets as there are dozens of potential aria- properties that should be supported in the templates.

[Becky Gibson]

So, attributeList isn't an issue for the templates. Any attribute added to the template will be included in the widget.

[bill]

Assuming this is done in or before 2.0, in 2.0 we can remove the waiRole and waiState processing from _Templated. So I'm gonna mark this as 2.0 meaning "in or before 2.0".

[bill]

I'm going to put this into 1.6 as it's somewhat related to the performance fixes for IE. We'll remove waiRole and waiState support from _Templated in 2.0.

[bill]

(In [22802]) Remove waiRole and waiState from templates and use role and aria-stateName directly, fixes #10997 !strict.