If a user has a required action, e.g. adding a 2FA method or filling in new required fields, we disable client-side routing except to allowed pages.
This led to a situation where a user might navigate away from e.g. the profile page to look at the new ToS, and then being "stuck" due to not knowing how to get back to accept the new terms.
This PR makes it so that if you click any restricted link, instead of doing nothing we transition the user back to the page where they can take the required action.
We want to allow admins to make new required fields apply to existing users. In order for this to work we need to have a way to make those users fill up the fields on their next page load. This is very similar to how adding a 2FA requirement post-fact works. Users will be redirected to a page where they can fill up the remaining required fields, and until they do that they won't be able to do anything else.
