Put material textures for PBO and raytracing into separate group
As of ParaView 5.10.0-RC1, textures for materials used in physically based rendering and raytracing show up as textures available in the Texture property of the Logo source. This is unlikely to be useful, and obscures the textures one might actually want to show with a Logo source.
See the original discussion here: https://discourse.paraview.org/t/issue-with-new-env-map-background-toggles-in-5-10-rc1/8139/3