fix: Fix floordiv / modulo with scalar 0 on LHS

[nameexhaustion]

Fixes #19142

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 79.77%. Comparing base (018dfd1) to head (f7c653e).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/polars-compute/src/arithmetic/unsigned.rs	0.00%	6 Missing ⚠️
crates/polars-compute/src/arithmetic/signed.rs	66.66%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #19143      +/-   ##
==========================================
- Coverage   79.81%   79.77%   -0.04%     
==========================================
  Files        1531     1531              
  Lines      208576   208436     -140     
  Branches     2913     2913              
==========================================
- Hits       166466   166287     -179     
- Misses      41559    41598      +39     
  Partials      551      551              

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