Updated display_df and print_list to use isclose for show_only_changes

[bdavj]

Previously, show_only_changes used direct equality, resulting in all values flagging as changed incorrectly.

This change updates CounterfactualExamples to use math.isclose to generate both the lists and displayed dataframes when show_only_changes=True

[codecov-commenter]

Codecov Report

Patch coverage: 33.33% and no project coverage change.

Comparison is base (6d4b871) 68.27% compared to head (76d436b) 68.28%.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #357   +/-   ##
=======================================
  Coverage   68.27%   68.28%           
=======================================
  Files          27       27           
  Lines        3603     3604    +1     
=======================================
+ Hits         2460     2461    +1     
  Misses       1143     1143           

Flag	Coverage Δ
unittests	68.28% <33.33%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
dice_ml/diverse_counterfactuals.py	65.54% <33.33%> (+0.23%)	⬆️

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[amit-sharma]

Thanks for this contribution @bdavj somehow I missed checking this PR.