vtkParallelSerialWriter: support partitioned-dataset(-collection)
vtkParallelSerialWriter now supports vtkPartitionedDataSetCollection and vtkPartitionedDataSet inputs. Multiblock and AMR support too is now cleaner since the filter coverts to PDC internally and uses a simpler logic.
Closes #21003 (closed)
backport: release
Edited by Utkarsh Ayachit