paraview: optionally depend on `threedxwaresdk`
Without this, the SDK might be detected as being enabled but not built first.
See: https://gitlab.kitware.com/paraview/paraview-superbuild/-/jobs/9397399#L9603
Without this, the SDK might be detected as being enabled but not built first.
See: https://gitlab.kitware.com/paraview/paraview-superbuild/-/jobs/9397399#L9603