Paraview 5.8.0-RC3 VTK-xml reader: cell offsets cant be unsigned ints

In previous releases of Paraview, both cell offsets and cell connectivity could have the type UInt32. In the latest release, this has to be changed to Int32. Minimal Failing example attached: u.pvd u000000.vtu Giving rise to the following error message:

ERROR: In /home/buildslave/dashboards/buildbot/paraview-pvbinsdash-linux-shared-release_superbuild/build/superbuild/paraview/src/VTK/IO/XML/vtkXMLUnstructuredDataReader.cxx, line 649
vtkXMLUnstructuredGridReader (0x6a961b0): Error reading cell offsets: Unsupported array type: vtkUnsignedIntArray