Nit: role=none should be listed under "Roles which cannot be named"

[aleventhal]

Under https://w3c.github.io/aria/#namefromprohibited
role="presentation" is listed, but role="none" is not.

In other places where role=presentation is listed, I saw role=none also listed (although did not do a thorough search to see if there are other inconsistencies).

[scottaohara]

so from i can gather here, none isn't listed here because this list of roles is being created from the characteristics tables within each role definition section. none doesn't have that table, so it isn't showing up in the list.

[pkra]

As noted by @scottaohara this issue is due to aria-common not being able to add synonymous roles to "Roles which cannot be named".

[pkra]

Now that we have two cases of synonymous roles, perhaps we should have structural information for synonyms.