Fix return type for list_models()

[fengsi]

No functional change here, but if we were to redefine the built-in list, we'll need to make sure that any possible references to the list type should happen before the def list() function.

[bigcat88]

we should never name a function list.. we definitely should rename that function in a backward compatible way

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
comfy_cli/command/models/models.py	50.00%	1 Missing ⚠️

@@           Coverage Diff           @@
##             main     #330   +/-   ##
=======================================
  Coverage   52.22%   52.22%           
=======================================
  Files          32       32           
  Lines        3527     3527           
=======================================
  Hits         1842     1842           
  Misses       1685     1685           

Files with missing lines	Coverage Δ
comfy_cli/command/models/models.py	40.00% <50.00%> (ø)

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[bigcat88]

thanks for this PR