fix JSON error

[nwlandry]

This PR converts NaNs to None in the write_hif function so that we no longer get JSON errors.

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.59%. Comparing base (eecad09) to head (06e682b).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
xgi/convert/hif_dict.py	84.61%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #677      +/-   ##
==========================================
- Coverage   93.62%   93.59%   -0.03%     
==========================================
  Files          66       66              
  Lines        5110     5120      +10     
==========================================
+ Hits         4784     4792       +8     
- Misses        326      328       +2     

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[maximelucas]

Nice, thanks Nich!
Should we open an issue to make sure we re-write all XGI-data files with the fix?

But wait, just to check, what was the problem with the nans?
It looks like JSON can handle nans: https://stackoverflow.com/questions/6601812/sending-nan-in-json

[nwlandry]

Nice, thanks Nich! Should we open an issue to make sure we re-write all XGI-data files with the fix?

But wait, just to check, what was the problem with the nans? It looks like JSON can handle nans: https://stackoverflow.com/questions/6601812/sending-nan-in-json

From my reading of the article, Javascript can handle NaN, but JSON cannot.

"NaN, Infinity and -Infinity are not part of JSON, but they are standard in Javascript"

I will open an issue on XGI-DATA!