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Make Ioss default reader for Exodus files

Utkarsh Ayachit requested to merge utkarsh.ayachit/paraview:default-to-ioss into master

This MR makes Ioss reader the default reader for exodus files. The old exodus reader is still available. State files and Python scripts can continue to use the old reader. The UI simply does not offer the old reader as a choice for exodus files unless the plugin LegacyExodusReader is loaded.

This change causes several tests to be updated since the Ioss output is not the same as Exodus reader output.

This includes several other related fixes necessary to get the test suite working following this change:

  1. Fixes #20641 (closed) (parallel PDC/PD writers)
  2. Fixes #20488 (closed) (find data and block selectors)
  3. Fixes #19395 (closed) (find data and non-distributed data)
  4. Fixes #20654 (closed) (local rendering)

This also raises new issues for todo items:

  1. plot edges (#20659)
  2. TestGroupDataFromTimeSeries (#20660 (closed))
  3. TraceStatisticsFilter (#20661)
  4. ParallelCoordinatesView (#20679)
  5. CheckSelectedBlocks (#20682)
Edited by Utkarsh Ayachit

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