The container size propagation logic in SVGImage does not handle RenderSVGRoot, only LegacyRenderSVGRoot at present. Fix that.
Pull request: https://github.com/WebKit/WebKit/pull/4995
<rdar://problem/101046176>
Committed 255625@main (3c9c0209a078): <https://commits.webkit.org/255625@main> Reviewed commits have been landed. Closing PR #4995 and removing active labels.