Review elements that allow 'any role'

[scottaohara]

The following elements allow for 'any role'. The inline, text-level semantics, elements are the ones that seem a bit suspect at allowing 'any' role... but maybe someone has a use case for <i role=table>...</i> or <b role=main>...</b>?

Elements: address, blockquote, canvas, hgroup, p, del, ins, rp, rt, ruby, a without href, abbr, b, bdi, bdo, cite, code, data, dfn, em, i, kbd, mark, output, pre, q, s, samp, small, span, strong, sub, sup, time, u, var

Note: we may decide to do nothing here. But I want to at least discuss the topic.

Elements which do not need a review/will be taken care of by other issues/PRs

• div
• figure with no descendant figcaption - this was updated recently in update allowances for figure #209.
• wbr presently allows for any role, but this will be changed via Correction: revise wbr and br element allowances #353.
• table related elements will be addressed by resolving Revise allowed roles/attributes on table elements #258.
• svg was updated to allow any role via update svg row #264.

[scottaohara]

likely related to work that will be done with #358