Blocks can't be unselected in Exodus reader
Here is a dataset that has blocks that can be unselected in the Exodusreader, but are read in anyway.
- 5.8.0, builtin server, Linux.
- Read in single file. Turn off reading either block. Apply.
- Read in spread file. Turn off reading either block. Apply.
Both will always be read in. This is a bug.
Needs to be tested and fixed in the Exodus reader rewrite.