## Summary

Solves the initial UI "flash" when new data view picker is enabled and
the application is starting.

Compared to previous approach, we are not doing default data view
provider and just check the loading state before telling the user no
indices are matched.

## Testing
Head to timelines page or explore pages... should not see the data flash
with this feature flag on.
Brief blank page could occur, as the proper loading screens would be
required.

```
xpack.securitySolution.enableExperimental: ['newDataViewPickerEnabled']
```

### Checklist

Check the PR satisfies following conditions.

Reviewers should verify this PR satisfies this list as well.

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
(cherry picked from commit 209c298)