Fix issue where rendering an SVG element using the `className` prop (alias) would incorrectly assign `className` as an attribute. /cc @pl12133
Fix issue where rendering an SVG element using the `className` prop (alias) would incorrectly assign `className` as an attribute. /cc @pl12133

developit/preact,gogoyqj/preact,neeharv/preact,developit/preact,neeharv/preact