Build SENSEI with Catalyst+external Conduit fails

[jhgoebbert]

If I build Catalyst with an external Conduit the build of SENSEI fails:

CMake Error at CMake/catalyst2.cmake:6 (find_package):
  Found package configuration file:

    <CATALYST_DIR>/lib64/cmake/catalyst-2.0/catalyst-config.cmake

  but it set catalyst_FOUND to FALSE so package "catalyst" is considered to
  be NOT FOUND.  Reason given by package:

  catalyst could not be found because dependency Conduit could not be found.

This might be related to this issue https://gitlab.kitware.com/paraview/catalyst/-/issues/32 but fixing this did not solve the whole problem - the issue remains.