allow dataset viewer on private NFAA datasets for Pro and Enterprise Hub
cc @Pierrci 

We enable the viewer for *private* NFAA datasets, owned by a Pro user or Enterprise Hub org.

The viewer is still disallowed on all public NFAA datasets.
allow dataset viewer on private NFAA datasets for Pro and Enterprise Hub: cc @Pierrci 

We enable the viewer for *private* NFAA datasets, owned by a Pro user or Enterprise Hub org.

The viewer is still disallowed on all public NFAA datasets.