Tab Component lacks accessible role="tab"

[hergaiety]

The ember-paper Tabs component renders a wrapper element with a role='tablist, which is a superb start. However, an element with this role requires a child element to have a role='tab' https://dequeuniversity.com/rules/axe/3.5/aria-required-children?application=axeAPI.

Running a a11yAudit with popular ember-a11y-testing addon fails with a aria-required-children rule violation.