`math` element

Pass Criteria

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

Reference

Test math-001: `math` element

x^{2} + 4 x + 4 = 0

Test math-002: `math` element with `aria-label`

x^{2} + 4 x + 4 = 0