Testing shows SVG <set> works on FF desktop/android (#9510)
Testing shows SVG <set> works on FF desktop/android (#9510)

* Testing shows SVG <set> works on FF, Opera (and android)

* Match set to SVGSetElement

* Match set and to
chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data