[feat][backend]fix NewDataset

[zero3233-bd]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@           Coverage Diff           @@
##             main     #274   +/-   ##
=======================================
  Coverage   68.01%   68.02%           
=======================================
  Files         568      568           
  Lines       50478    50480    +2     
=======================================
+ Hits        34335    34341    +6     
+ Misses      13473    13471    -2     
+ Partials     2670     2668    -2     

Flag	Coverage Δ
unittests	68.02% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...in/task/service/taskexe/processor/auto_evaluate.go	82.31% <100.00%> (+0.05%)	⬆️
...dules/observability/domain/trace/entity/dataset.go	85.36% <100.00%> (+0.11%)	⬆️
...ility/domain/trace/service/trace_export_service.go	72.30% <100.00%> (ø)

... and 3 files with indirect coverage changes

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[CozeLoop]

Reviewed the changes focusing on dataset construction and call sites. The re-introduction of EvaluationBizCategory and adjustments to NewDataset usage compile cleanly and pass tests. No correctness or concurrency risks found in the modified lines. Approving.