Enable validations for FeatureMetadata when passed into RAIInsights

[gaugup]

Description

It seems like the validation was happening in the function _validate_rai_insights_input_parameters but the feature_metadata was not passed to the function. Now passing this parameter and added a test.

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 #1651 (195be27) into main (b899faf) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1651   +/-   ##
=======================================
  Coverage   90.20%   90.20%           
=======================================
  Files          39       39           
  Lines        1716     1716           
=======================================
  Hits         1548     1548           
  Misses        168      168           

Flag	Coverage Δ
unittests	90.20% <ø> (ø)

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[github-actions]

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

[github-actions]

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