fix_lenspyx_result allows 1e-5 tolerance on lenspyx and pixell pixels

[zatkins2]

I found sometimes that this assertion statement will fail due to floating point errors on phi0, with the pixel index being like <something>.99999999, which clearly indicates the pixel matches

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.60%. Comparing base (73d3f2b) to head (64a0958).

Files with missing lines	Patch %	Lines
pixell/lensing.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #318   +/-   ##
=======================================
  Coverage   37.60%   37.60%           
=======================================
  Files          37       37           
  Lines       11540    11540           
=======================================
  Hits         4340     4340           
  Misses       7200     7200           

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[zatkins2]

Sorry caught one more tiny bug (a typo), but this dimissed your approval

[amaurea]

This looks good to me, but I didn't write the original code, so Mat(?) should probably comment too.