Add Microsoft Edge to safety content page example

[matteason]

Related documentation

https://design-system.service.gov.uk/patterns/exit-a-page-quickly/#example-of-a-safety-content-page

Suggestion

The example safety content page doesn't mention Microsoft Edge in the 'Deleting your internet browsing history' or 'Browsing in private' sections. Because it's the default browser in Windows it would probably make sense to include it here. This is the relevant Edge help page.

I know the content given is an example and should be modified by service teams where appropriate, but it may well be copied verbatim - for example on suffolk.gov.uk

Arguably Internet Explorer should be removed, as it's been disabled by Microsoft via a Windows update and is no longer on the service manual's list of browsers to test in, but it may still be in use on older devices so maybe it makes sense to play it safe and leave it in.

(Also, is the content on this page intentionally full-width? Other content pattern examples use a two-thirds column, for example 'There is a problem with the service')

Evidence

https://hachyderm.io/@TheRealNooshu/109947371072583386 shows Edge used by 12% of GOV.UK visitors in March 2023 - above Firefox, Opera and IE

[matteason]

Also the guidance to "Go to the menu, click on ‘File’" only applies on macOS, where the menu bar is always visible. On other platforms, including iOS, there is no File menu to click