fix: serialization of properties using lambda as a property attribute

[syphax-bouazzouni]

fix, the following bug in the displaying of the parent context, raised by @alexskr in Slack.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 77.93%. Comparing base (0227d37) to head (31791e8).

Files	Patch %	Lines
lib/ontologies_linked_data/serializers/json.rb	66.66%	1 Missing ⚠️

Additional details and impacted files

@@                                           Coverage Diff                                           @@
##           feature/multilingual-support-add-search-and-languages-serialization     #202      +/-   ##
=======================================================================================================
- Coverage                                                                78.10%   77.93%   -0.18%     
=======================================================================================================
  Files                                                                       74       74              
  Lines                                                                     5372     5374       +2     
=======================================================================================================
- Hits                                                                      4196     4188       -8     
- Misses                                                                    1176     1186      +10     

Flag	Coverage Δ
unittests	77.93% <66.66%> (-0.18%)	⬇️

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[syphax-bouazzouni]

incuded in #204