AlertModal title incorrectly styled as h4 vs. h3

[adamstankiewicz]

Bugs

The ModalDialog.Title component used within AlertModal is an h2 element styled as a h4 (source), despite Paragon's Figma library showing it styled as an h3 like the other modal component variants (e.g., StandardDialog, ModalDialog).

It appears the AlertModal title has had the discrepancy between Figma and the implemented code discrepancy since it was originally introduced in April 2021. Unsure if there was a specific rationale for this (assuming it was intentional), and/or whether the Figma changed after the original implementation.

Implemented (code)

Heading is styled as h4 (i.e., 18px for @edx/brand-edx.org's base font size)

Figma (mock)

Heading is styled as h3 (i.e., 22px for @edx/brand-edx.org's base font size)