Add input type validation for FeatureMetadata class

[gaugup]

Description

It could be so if these type validations are not in place, we might see weird failures in the code.

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 #2218 (670068b) into main (5eced64) will increase coverage by 4.49%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2218      +/-   ##
==========================================
+ Coverage   88.07%   92.56%   +4.49%     
==========================================
  Files         129       55      -74     
  Lines        7319     2125    -5194     
==========================================
- Hits         6446     1967    -4479     
+ Misses        873      158     -715     

Flag	Coverage Δ
unittests	92.56% <ø> (+4.49%)	⬆️

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see 74 files with indirect coverage changes

[github-actions]

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

[github-actions]

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

[romanlutz]

Thanks! This should help raise some issues in a clearer way.

[github-actions]

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

[github-actions]

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