show representation for failure in feature extraction if subject defined

[robstoll]

or in case failure hints or sub-assertions are defined.

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[codecov]

Codecov Report

Merging #951 (1f1f0a5) into master (1a8e024) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #951      +/-   ##
==========================================
+ Coverage   91.26%   91.27%   +0.01%     
==========================================
  Files         431      431              
  Lines        4282     4288       +6     
  Branches      215      216       +1     
==========================================
+ Hits         3908     3914       +6     
  Misses        325      325              
  Partials       49       49              

Flag	Coverage Δ
bbc	80.64% <100.00%> (+0.02%)	⬆️
bc	80.56% <100.00%> (+0.02%)	⬆️
current	87.50% <100.00%> (+0.01%)	⬆️
current_windows	86.56% <100.00%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
...ating/transformers/impl/DefaultFeatureExtractor.kt	100.00% <100.00%> (ø)
...atrium/logic/impl/DefaultIterableLikeAssertions.kt	97.14% <100.00%> (ø)

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