Add IE versions for api.Window.page[show/hide]_event (#13070)
Add IE versions for api.Window.page[show/hide]_event (#13070)

This PR adds real values for Internet Explorer for the `pageshow_event` and `pagehide_event` members of the `Window` API, based upon manual testing.

Test Code Used:
```js
window.addEventListener('pagehide', function() {
	console.log('Page hide!');
});
window.addEventListener('pageshow', function() {
	console.log('Page show!');
});
```
mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data