Handle all-infeasible traces in UtilityProgressionAnalysis

[shrutipatel31]

Summary: When get_trace returns all infeasible points (represented as inf or -inf values), the utility progression plot would previously attempt to plot these infinite values. This change adds a check to raise an ExperimentNotReadyError with a clear message when all trials are infeasible, preventing the plot from displaying meaningless data.

Differential Revision: D91751120

[meta-codesync]

@shrutipatel31 has exported this pull request. If you are a Meta employee, you can view the originating Diff in D91751120.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.74%. Comparing base (5190f4b) to head (ccb4851).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4837   +/-   ##
=======================================
  Coverage   96.74%   96.74%           
=======================================
  Files         588      588           
  Lines       61526    61537   +11     
=======================================
+ Hits        59524    59535   +11     
  Misses       2002     2002           

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