<svg>s are classified as invisible #1844
Description
The following SVG element is invisible according to Alfa; the Style.isVisible predicate returns false. The example is from Passed Example 2 at https://www.w3.org/WAI/standards-guidelines/act/rules/qt1vmo/ where the rule in question is applicable and passes the SVG element so at least there is it assumed to be visible. It's also visible when viewed in a browser. Is this a bug in Alfa?
<html lang="en">
<svg viewBox="0 0 512 512" aria-label="HTML 5 logo" role="img">
<path d="M108.4 0h23v22.8h21.2V0h23v69h-23V46h-21v23h-23.2M206 23h-20.3V0h63.7v23H229v46h-23M259.5 0h24.1l14.8 24.3L313.2 0h24.1v69h-23V34.8l-16.1 24.8l-16.1-24.8v34.2h-22.6M348.7 0h23v46.2h32.6V69h-55.6" />
<path fill="#e44d26" d="M107.6 471l-33-370.4h362.8l-33 370.2L255.7 512" />
<path fill="#f16529" d="M256 480.5V131H404.3L376 447" />
<path fill="#ebebeb" d="M142 176.3h114v45.4h-64.2l4.2 46.5h60v45.3H154.4M156.4 336.3H202l3.2 36.3 50.8 13.6v47.4l-93.2-26" />
<path fill="#fff" d="M369.6 176.3H255.8v45.4h109.6M361.3 268.2H255.8v45.4h56l-5.3 59-50.7 13.6v47.2l93-25.8" />
</svg>
</html>