fix: AnyValue Series from Categorical/Enum

[coastalwhite]

Fixes #18874.

[codecov]

Codecov Report

Attention: Patch coverage is 79.06977% with 27 lines in your changes missing coverage. Please review.

Project coverage is 79.88%. Comparing base (f1133a4) to head (a545c9f).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/polars-core/src/series/any_value.rs	75.40%	15 Missing ⚠️
...polars-core/src/chunked_array/logical/enum_/mod.rs	82.35%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #18893      +/-   ##
==========================================
+ Coverage   79.86%   79.88%   +0.01%     
==========================================
  Files        1520     1521       +1     
  Lines      206545   206675     +130     
  Branches     2906     2906              
==========================================
+ Hits       164958   165093     +135     
+ Misses      41039    41034       -5     
  Partials      548      548              

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