Fix scheduler pick candidate and associate child encounter dead lock

[244372610]

Description

Fix scheduler pick candidate and associate child encounter dead lock

Related Issue

fix #500

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:

• Code compiles correctly.
• My code follows the code style of this project.
• 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.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #500 (2679235) into main (733962f) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #500      +/-   ##
==========================================
- Coverage   39.55%   39.54%   -0.01%     
==========================================
  Files          81       81              
  Lines        6285     6284       -1     
==========================================
- Hits         2486     2485       -1     
+ Misses       3441     3440       -1     
- Partials      358      359       +1     

Flag	Coverage Δ
e2etests	∅ <ø> (∅)
unittests	39.54% <0.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
scheduler/config/config.go	0.00% <0.00%> (ø)
client/daemon/peer/peertask_base.go	32.39% <0.00%> (-0.71%)	⬇️
client/daemon/peer/peertask_stream.go	56.98% <0.00%> (+0.73%)	⬆️

[gaius-qi]

LGTM