Make sure the mapper is set in PVLODActor

The PVLODActor uses a Device internally that is
an actor, but it never sets the mapper on this Device
which causes incorrect results to be returned from calls
such as GetBounds on that Device.

ParaViewCore/VTKExtensions/Rendering/vtkPVLODActor.cxx

@@ -133,6 +133,7 @@ void vtkPVLODActor::Render(vtkRenderer* ren, vtkMapper* vtkNotUsed(m))
   // We might want to estimate time from the number of polygons in mapper.
   vtkInformation* info = this->GetPropertyKeys();
   this->Device->SetPropertyKeys(info);
+  this->Device->SetMapper(mapper);
   this->Device->Render(ren, mapper);
   if (this->Texture)
   {