added IgnoreUnrecognizedTypeDiscriminators = true

[ryanheath]

I forgot attribute option IgnoreUnrecognizedTypeDiscriminators = true
otherwise the fallback to base class is still not working ...

fix upon #462

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.77%. Comparing base (646b180) to head (72e42a9).
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #465      +/-   ##
==========================================
+ Coverage   85.95%   91.77%   +5.82%     
==========================================
  Files          50       50              
  Lines        2769     2638     -131     
==========================================
+ Hits         2380     2421      +41     
+ Misses        357      188     -169     
+ Partials       32       29       -3     

Flag	Coverage Δ
unittests	91.77% <100.00%> (+5.82%)	⬆️

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[christianhelle]

@ryanheath I'll publish a new pre-release that includes this fix

Thanks for the contribution