[private] ZShadow example supports VoiceOver (#8881)
[private] ZShadow example supports VoiceOver (#8881)

Allowing the tapable items to be correctly called out in voiceover and be interactable.

Closes #8843 
material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios