feat: reduce the scheduler return content of the parent

[gaius-qi]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.50%. Comparing base (4aa12f8) to head (279d249).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3349      +/-   ##
==========================================
- Coverage   52.58%   52.50%   -0.09%     
==========================================
  Files         192      192              
  Lines       20462    20428      -34     
==========================================
- Hits        10760    10725      -35     
  Misses       8899     8899              
- Partials      803      804       +1     

Flag	Coverage Δ
unittests	52.50% <ø> (-0.09%)	⬇️

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

Files	Coverage Δ
scheduler/scheduling/scheduling.go	84.21% <ø> (+0.15%)	⬆️

... and 3 files with indirect coverage changes