Fix offline

[fzaninotto]

Problem

Offline apps behave in a strange way, sometimes showing error pages even though they should not.

The offline mode of TanStack Query works fine in a standalone example, so the problems come from react-admin.

Solution

Build a demo, track down the issues and fix them.

When offline, all calls to useQuery return an error... but they also return data.

In a nutshell, we must not only check for errors before deciding to show/return things but also that no data is available for offline support to work correctly

•  Fix useReference
• Fix ReferenceField
• Fix ListView
• Test on a larger app (e.g. Atomic CRM)

If we have a NetworkError and valid data, it means we're offline and that TanStack query returned stale data.

How To Test

• build
• yarn preview

(the offline mode doesn't work in dev mode, that's a limitation of vite-pwa)

Describe the steps required to test the changes

Additional Checks

• The PR targets master for a bugfix or a documentation fix, or next for a feature
• The PR includes unit tests (if not possible, describe why)
• The PR includes one or several stories (if not possible, describe why)
• The documentation is up to date