Keep logs for WorkerBackend

[ph-kev]

This PR makes it so the logs are not cleaned up at the end of the Julia process.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.05%. Comparing base (b81d752) to head (161217c).

Files with missing lines	Patch %	Lines
src/backends/workers.jl	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #348      +/-   ##
==========================================
- Coverage   59.09%   59.05%   -0.04%     
==========================================
  Files          19       19              
  Lines        1611     1612       +1     
==========================================
  Hits          952      952              
- Misses        659      660       +1     

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