perf: 优化task_count接口性能 --story=128427121

[guohelu]

Reviewed, transaction id: 70404

[codecov-commenter]

Codecov Report

❌ Patch coverage is 12.50000% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.51%. Comparing base (3ade5e6) to head (4648744).

Files with missing lines	Patch %	Lines
gcloud/core/apis/drf/viewsets/taskflow.py	12.50%	7 Missing ⚠️

❌ Your patch status has failed because the patch coverage (12.50%) is below the target coverage (50.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8131      +/-   ##
==========================================
- Coverage   58.52%   58.51%   -0.01%     
==========================================
  Files         672      672              
  Lines       36647    36653       +6     
==========================================
  Hits        21446    21446              
- Misses      15201    15207       +6     

Files with missing lines	Coverage Δ
gcloud/core/apis/drf/viewsets/taskflow.py	26.36% <12.50%> (-0.47%)	⬇️

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