about aria-readonly=true

Closely related to #939 (closed)

From the User Group:

[...] the screen reader reads "clickable on mouseover" after each inline term. This is because I am missing the aria-readonly=true attribute on the span with class=MathJax.

And

I did try putting the aria-readonly=true attribute on the MathML tag, but the result is that it is applied to the incorrect span. The aria-readonly tag must be on the span with class="MathJax" in order to prevent the "clickable" issue.

I'm not sure what the right approach is.