FIxes the way the types of the cells produced by the clip method are attributed
requested to merge 25-sigsegv-after-applying-the-vtkmaterialinterface-filter-on-some-big-database into main
The fact that we use the GetNextCell method seems quite strange as we do not know exactly where the iteration starts.
Instead we propose to use the GetCellAtId method, passing explicit local id of the cell we are interested in.
Closes #25 (closed) Closes #26 (closed)