schedulers: fix config data race

[lhy1024]

What problem does this PR solve?

Issue Number: Close #7485

What is changed and how does it work?

Check List

Tests

• Unit test

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• JmPotato
• rleungx

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[codecov]

Codecov Report

Merging #7486 (4ea9bb5) into master (150139c) will decrease coverage by 0.04%.
The diff coverage is 72.41%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7486      +/-   ##
==========================================
- Coverage   74.34%   74.30%   -0.04%     
==========================================
  Files         451      451              
  Lines       49726    49757      +31     
==========================================
+ Hits        36969    36973       +4     
- Misses       9433     9459      +26     
- Partials     3324     3325       +1     

Flag	Coverage Δ
unittests	74.30% <72.41%> (-0.04%)	⬇️

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[lhy1024]

/merge

[ti-chi-bot]

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 4ea9bb5