fix: DIA-1489: backwards compatible autorefinement with non-multiskill

[matt-bernstein]

fall back to a default label config

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 65.67%. Comparing base (3665a80) to head (2da0471).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
adala/skills/collection/prompt_improvement.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #241      +/-   ##
==========================================
- Coverage   65.70%   65.67%   -0.03%     
==========================================
  Files          47       47              
  Lines        2391     2392       +1     
==========================================
  Hits         1571     1571              
- Misses        820      821       +1     

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