Fix rq scheduler launch

[Marishka17]

Motivation and context

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have created a changelog fragment
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (see GitHub docs)
• I have increased versions of npm packages if it is necessary
  (cvat-canvas,
  cvat-core,
  cvat-data and
  cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.

[codecov]

Codecov Report

Merging #7293 (a2d7dd5) into develop (06c6a76) will decrease coverage by 0.14%.
Report is 1 commits behind head on develop.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7293      +/-   ##
===========================================
- Coverage    83.09%   82.96%   -0.14%     
===========================================
  Files          372      372              
  Lines        39500    39576      +76     
  Branches      3665     3688      +23     
===========================================
+ Hits         32824    32833       +9     
- Misses        6676     6743      +67     

Components	Coverage Δ
cvat-ui	78.43% <ø> (-0.27%)	⬇️
cvat-server	87.10% <ø> (+<0.01%)	⬆️

[azhavoro]

Please add a note to the changelog