Update AnimationEvent contructor support for earlier Edge (#6532)
Update AnimationEvent contructor support for earlier Edge (#6532)

Found by testing
https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=8357 in
Edge 13-16 on Sauce Labs.
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data