feat: retry chunk errors

[Birkbjo]

This makes it possible for the user to "retry" when a chunk fails to load. This should hopefully be a pretty rare occurrence so I'm not sure if this is actually needed, but I wanted to investigate the possibility of doing this.

The implementation seems a bit "hacky", since we force react-router to remount by recreating the router. But from my experimentation and research, there doesn't seem to be a way to "reload" / retry the lazy function of a Route once it (or ErrorElement) has mounted. Another approach would be to programatically "retry" by running the import promise again, however then we can't show a spinner or a fallback component in the meantime.

Test

• Open network tab in developer console
• Navigate to the data element route
• Block the data element chunk
• Reload the page, and see that the error message with a retry button appears.
• Click retry button and verify that it fails again
• Remove chunk from blocked requests
• Click retry, and the data element component should render