Support cohort filtering of string target in rai_insights

[gaugup]

Description

Seems like we weren't passing the classes from rai_insights to cohort filtering class.

Checklist

• [ ] I have added screenshots above for all UI changes.
• [ ] I have added e2e tests for all UI changes.
• [ ] Documentation was updated if it was needed.

[codecov-commenter]

Codecov Report

Merging #1771 (2fb9cff) into postga (d0d338e) will increase coverage by 4.24%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           postga    #1771      +/-   ##
==========================================
+ Coverage   84.07%   88.32%   +4.24%     
==========================================
  Files          48       89      +41     
  Lines        2776     5259    +2483     
==========================================
+ Hits         2334     4645    +2311     
- Misses        442      614     +172     

Flag	Coverage Δ
unittests	88.32% <ø> (+4.24%)	:arrow_up:

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

Impacted Files	Coverage Δ
...sibleai/responsibleai/rai_insights/rai_insights.py	78.74% <ø> (ø)
...ai/responsibleai/_tools/causal/causal_constants.py	100.00% <0.00%> (ø)
responsibleai/responsibleai/exceptions.py	100.00% <0.00%> (ø)
...ibleai/_tools/shared/state_directory_management.py	100.00% <0.00%> (ø)
...onsibleai/_tools/shared/attribute_serialization.py	95.94% <0.00%> (ø)
...ai/responsibleai/rai_insights/rai_base_insights.py	87.58% <0.00%> (ø)
...leai/responsibleai/modelanalysis/model_analysis.py	94.33% <0.00%> (ø)
...onsibleai/responsibleai/managers/causal_manager.py	95.51% <0.00%> (ø)
responsibleai/responsibleai/_config/base_config.py	92.30% <0.00%> (ø)
...ponsibleai/responsibleai/_tools/shared/versions.py	100.00% <0.00%> (ø)
... and 32 more

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[github-actions[bot]]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/gaugup/PostCohortTests/dashboard/index.html