Add Updated NaN Checks

[jacobbieker]

Pull Request

Description

This PR updates the NaN checking to be more informative and give warnings rather than errors.

Fixes #

How Has This Been Tested?

Unit tests

• [x] Yes

Checklist:

• [ ] My code follows OCF's coding style guidelines
• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

Merging #236 (7e9bcfa) into main (2d22c80) will increase coverage by 0.26%. Report is 11 commits behind head on main. The diff coverage is 46.42%.

@@            Coverage Diff             @@
##             main     #236      +/-   ##
==========================================
+ Coverage   80.18%   80.45%   +0.26%     
==========================================
  Files         127      128       +1     
  Lines        5622     5633      +11     
==========================================
+ Hits         4508     4532      +24     
+ Misses       1114     1101      -13     

Files	Coverage Δ
ocf_datapipes/training/example/nwp_pv.py	89.28% <100.00%> (ø)
ocf_datapipes/utils/geospatial.py	79.31% <75.00%> (ø)
ocf_datapipes/visualization/batch.py	0.00% <0.00%> (ø)
ocf_datapipes/validation/check_for_nans.py	78.37% <61.90%> (-12.54%)	:arrow_down:
ocf_datapipes/validation/check_equality.py	70.14% <31.03%> (+34.08%)	:arrow_up:

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[dfulu]

Looks good. Just one wee comment