Bugfix: fix return datatype in _sample_with_metadata

[MooooCat]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 79.82%. Comparing base (ec31560) to head (fe88c2d).
Report is 1 commits behind head on main.

Files	Patch %	Lines
sdgx/models/LLM/single_table/gpt.py	0.00%	3 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #145      +/-   ##
==========================================
- Coverage   79.87%   79.82%   -0.05%     
==========================================
  Files          69       69              
  Lines        3250     3252       +2     
==========================================
  Hits         2596     2596              
- Misses        654      656       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.