Fixes the last failing subtest of WPT
/dom/lists/DOMTokenList-coverage-for-attributes.html (174/175 ->
175/175): an <a> element in the SVG namespace must expose relList as a
DOMTokenList (while SVG <area>/<link> have none).
Main now provides the full SVGAElement type (SVGGraphicsElement
hierarchy, href as SVGAnimatedString); this commit only adds the
relList accessor, reflecting the rel attribute through the shared
Element.getRelList.
(As originally written, this commit also created the SVGAElement type
and its factory/tag wiring; the rebase keeps main's implementation.)
Coverage: /dom/lists/DOMTokenList-coverage-for-attributes.html 174/175
-> 175/175 (fully green).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
3cd0f07745