CGNS outline mode blank remote server

We are getting either nothing showing up, or only one block showing up, with CGNS. 5.6.0 does not show this issue. Here is how to replicate:

• Linux, remote server (16 ranks), master (v5.6.1-1778-g702a95d2).
• Open Whitney 144 file cgns dataset. Apply.
• It will come up in outline mode, colored by block colors.

Nothing shows up! This is a bug.

Note - I have also seen only one block (generally a yellow one) show up. It is inconsistent.

@utkarsh.ayachit @cory.quammen I hate to do this, but I think this is a showstopper for the 5.7 release.

Watney bug.

Also verify that the fix does not bring back previously closed issues #19084 (closed) and #19037 (closed).