Fix offset array hist

[isentropic]

Description

Fixing this probably wouldn't work with like star wars arrays or some weird thing but at least it should work with linear arrays

Attribution

• I am listed in .zenodo.json (see How to get acknowledged #3503)

Things to consider

• Does it work on log scales?
• Does it work in layouts?
• Does it work in recipes?
• Does it work with multiple series in one call?
• PR includes or updates tests?
• PR includes or updates documentation?

[isentropic]

@t-bltg @BeastyBlacksmith this is probably safe to merge, but I've been so disconnected from Plots for a while, maybe something changed in the workflow

[isentropic]

probably don't squash as I tried to fix python tests here too

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (7cd27c4) 90.29% compared to head (0215f71) 90.28%.
Report is 25 commits behind head on master.

Files	Patch %	Lines
src/backends.jl	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4860      +/-   ##
==========================================
- Coverage   90.29%   90.28%   -0.02%     
==========================================
  Files          40       40              
  Lines        8752     8763      +11     
==========================================
+ Hits         7903     7912       +9     
- Misses        849      851       +2     

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[isentropic]

well pythonplot doesn't bug out now, but something else is wrong i'm not sure what. I need help with deciphering the errors for ubuntu 1.10, otherwise it is some windows plotlykaleido thing which I have no idea bout