Improve generation method string

[bernardbeckerman]

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Summary: Uses trial.generation_method_str for generation method column in Experiment.to_df(). This adds a more descriptive method-based column to the dataframe (e.g., Sobol, SAASBO instead of GenerationStep_0, GenerationStep_1, etc.).

Reviewed By: saitcakmak

Differential Revision: D69212624

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This pull request was exported from Phabricator. Differential Revision: D69212624

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D69212624

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D69212624

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.01%. Comparing base (666eedf) to head (82c444d).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3557      +/-   ##
==========================================
- Coverage   96.01%   96.01%   -0.01%     
==========================================
  Files         539      539              
  Lines       53136    53137       +1     
==========================================
- Hits        51020    51019       -1     
- Misses       2116     2118       +2     

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