`a` element with no `href`

Pass Criteria

#1: Element is supported
#2: Correct HTML and Core Accessibility API mappings
#3: Correct Accessible Name & Description Calculation

Reference

Test a-001: Anchor with no `href`

Test a-002: Anchor with no `href`, and with `aria-label` attribute.

Test a-003: Anchor with no `href`, and with no accessible name.