[BUG] Fix struct getters on logical types

[jaychia]

Struct getters on logical types were failing with:

Mismatch of expected expression data type and data type from computed series, <logical> vs <physical>

This PR fixes this by fixing the implementation of .with_validity on our logical arrays, which previously were erroneously returning Series of the physical type.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.72%. Comparing base (093e8d7) to head (e4e17ef).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2008      +/-   ##
==========================================
+ Coverage   84.70%   84.72%   +0.01%     
==========================================
  Files          58       58              
  Lines        6363     6369       +6     
==========================================
+ Hits         5390     5396       +6     
  Misses        973      973              

see 1 file with indirect coverage changes