reverse bad search&replace "accessibility descendant" in presentational role inheritance #2832

From https://w3c.github.io/aria/#presentational-role-inheritance

When an explicit or inherited role of none/presentation is applied to an element with the implicit semantic of a WAI-ARIA role that has Allowed Accessibility Child Roles, in addition to the element with the explicit role of none/presentation, the user agent MUST apply an inherited role of none to any accessibility descendants that do not have an explicit role defined.

The "accessibility descendants" phrasing was introduced in bb6baf1#diff-0eb547304658805aad788d320f10bf1f292797b5e6d745a3bf617584da017051R506

I think here we mean not just child (instead of descendant) but specifically "host-language-required child element without explicit role". (This requirement would still work recursively, e.g. for table markup.)

(Via dequelabs/axe-core#5171 (comment))