Fix size_bytes for logical types

[jaychia]

• .size_bytes currently panics if run on logical types (e.g. dates)
• This PR fixes that behavior by first casting into a Physical type

[codecov]

Codecov Report

Merging #724 (27e73fc) into main (c29f86b) will decrease coverage by 0.07%.
The diff coverage is 88.88%.

❗ Current head 27e73fc differs from pull request most recent head f6ba043. Consider uploading reports for the commit f6ba043 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #724      +/-   ##
==========================================
- Coverage   86.03%   85.97%   -0.07%     
==========================================
  Files         154      156       +2     
  Lines       12621    12735     +114     
==========================================
+ Hits        10859    10949      +90     
- Misses       1762     1786      +24     

Impacted Files	Coverage Δ
src/series/ops/len.rs	85.71% <66.66%> (+2.38%)	⬆️
src/python/series.rs	94.73% <100.00%> (+0.21%)	⬆️
src/python/table.rs	89.30% <100.00%> (ø)
src/table/mod.rs	78.98% <100.00%> (+0.13%)	⬆️

... and 8 files with indirect coverage changes