Hardcoded "In the future, this error screen could provide you with actions you can perform while offline..." message

[claudiulodro]

We recently passed the 4 year anniversary of this message being part of the Offline screen! 🎉 It is hard-coded into the offline template and not super simple to remove on a site, so I am curious if it is still relevant or if there are concrete plans to surface recent cached posts or something on that screen. If not, I think it probably makes sense to remove that line, especially since I imagine the majority of people that see the screen are site visitors who don't know what it means to be able to "edit recent drafts in Gutenberg".