Plex ex69: 2D tests for cohesive cells

Plex: Add a transform that makes cohesive cells

Plex: Major changes to the behavior of cohesive cells
- Ghost cohesive cells now have no special marking (was shift3)
- By default, impinging faces separating fault sides do not split, but instead fo

Plex: Major changes to the behavior of cohesive cells
- Ghost cohesive cells now have no special marking (was shift3)
- By default, impinging faces separating fault sides do not split, but instead force unsplit nodes on the fault

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Plex: Allow cohesive cell labels to be created from the command line

Plex: Added a check for transitive closure

Plex: Allow a mesh to be specified from the command line through a string variable

Plex: Extensive reworking of orientation
- This allows an interior surface to be oriented
- Added DMPlexOrientLabel()

Plex ex66: Add second test

Plex: Fix determination of stratum to interpolate for non-manifold

Plex: Allow missing depths in DMPlexGetDepth()

Merge remote-tracking branch 'origin/release'

Typos

Plex ex8: Test for localized coordinates

DM: Add flag to turn off localization in SetFromOptions()

Merge branch 'jose/release/docstring' into 'release'

Docstring fixes

See merge request petsc/petsc!7425

Docstring fixes

configure: SLEPc 3.21.0

Merge branch 'jrwrigh/multiple_isoperiodic' into 'main'

Plex Isoperiodic: Allow multiple periodic directions

See merge request petsc/petsc!7305

Plex Isoperiodic: Add test for multiple periodic directions

Plex Isoperiodic: Update coordinate for multiple face_sfs

This could probably be made more efficient by consolidating the multiple
`affine` and `affine_to_local` into a single `VecScatter*` routine.

Plex Isoperiodic: Update coordinate for multiple face_sfs

This could probably be made more efficient by consolidating the multiple
`affine` and `affine_to_local` into a single `VecScatter*` routine. But
I'm not sure how exactly to do that and do not believe the performance
penalty here should be significant.

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Plex Isoperiodic: Form closure_sf from face_sfs

The `point_sf` was (and is still) used to redirect local mesh points in
the face's closure to their "true" owner. ie. if a local vertex was
actually o

Plex Isoperiodic: Form closure_sf from face_sfs

The `point_sf` was (and is still) used to redirect local mesh points in
the face's closure to their "true" owner. ie. if a local vertex was
actually owned by another rank, then the closure should refer to that
rank.

The only major change here is that as we loop over face_sfs, we update
the `point_sf` to be the merger of `point_sf` and the previously found
closure_sf. This way, if two `face_sf` share a mesh point in their
face's closure, it gets "claimed" only once.

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Plex Isoperiodic: Migrate handles multiple face_sfs

Plex Isoperiodic: Allow multiple Face SFs

This is important for cases of multiple directions of periodicity, whose
transforms are necessarily distinct from each other.

Merge branch 'knepley/fix-plex-cohesive-perm' into 'main'

Plex: Handle T-junctions in cohesive reordering

See merge request petsc/petsc!7417

Merge branch 'thecasterian/fix-cgns-types' into 'main'

CGNS: fix MPI type and format string for cgsize_t

See merge request petsc/petsc!7277