MNT add error that some rows of feat_ids only have -1

[MatthewSZhang]

Checklist

• Used a personal fork to propose changes
• A reference to a related issue: TST check all -1 feat_ids for NARX #74
• A description of the changes: raise value error when any rows of feat_ids in NARX only have -1

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (84b2f83) to head (4172a64).
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #75   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          603       585   -18     
=========================================
- Hits           603       585   -18     

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