fix: zero division for categorical colums with 100% missing data

[alexbarros]

Avoid error thrown when empty column is set as categorical with the type_schema

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 70.58824% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 90.19%. Comparing base (7612150) to head (52ad5ba).

Files	Patch %	Lines
...ata_profiling/model/pandas/describe_date_pandas.py	66.66%	2 Missing ⚠️
src/ydata_profiling/model/summary_algorithms.py	50.00%	2 Missing ⚠️
..._profiling/model/pandas/describe_boolean_pandas.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1569      +/-   ##
===========================================
- Coverage    90.25%   90.19%   -0.07%     
===========================================
  Files          195      195              
  Lines         6383     6394      +11     
===========================================
+ Hits          5761     5767       +6     
- Misses         622      627       +5     

Flag	Coverage Δ
py3.8-ubuntu-22.04-pandas	90.19% <70.58%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.