Add option to disable point merging in STL reader
The STL reader applies a point merging algorithm after reading the data. This is usually what you want, but there are instances when you might wish to merge the points.
The VTK reader has an option to turn off the point merging, but this option is not exposed in the ParaView servermanager XML. It is an easy fix to add this option. See https://discourse.paraview.org/t/avoid-merging-duplicated-points/12905 for a discussion on how to update the XML. (Note that, unlike in the discourse discussion, the point merging feature should be defaulted to 1 to maintain backward compatibility.)