fixes #16997. Add quasi-transparent background color on SpinWheelSlot touch element, so the SpinWheel is usable on IE. Thanks Sebastien Brunot (IBM, CCLA).
fixes #16976, refs #16178. Accessibility enhancements for mobile IconMenu and IconMenuItem + resets pointer cursor on Accordion (removed by a previous a11y patch). Thanks David Todd (IBM, CCLA), Paul Christopher (CLA). !strict