updating compat data for pageshow and pagehide events (#6187)
updating compat data for pageshow and pagehide events (#6187)

* updating compat data for pageshow and pagehide events

* removing persisted event properties, as per ddbeck comments
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data