Point data vs cell data

[jhdark]

Proposed changes

Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request. If it fixes a bug or resolves a feature request, be sure to link to that issue.

Types of changes

What types of changes does your code introduce to foam2dolfinx?

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code refactoring
• Documentation Update (if none of the other choices apply)
• New tests

Checklist

• Unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

❌ Patch coverage is 20.00000% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.60%. Comparing base (9134427) to head (5d87990).

Files with missing lines	Patch %	Lines
src/foam2dolfinx/open_foam_reader.py	20.00%	12 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (9134427) and HEAD (5d87990). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (9134427)	HEAD (5d87990)
	5	3

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #33      +/-   ##
==========================================
- Coverage   97.22%   87.60%   -9.62%     
==========================================
  Files           2        2              
  Lines         108      121      +13     
==========================================
+ Hits          105      106       +1     
- Misses          3       15      +12     

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