fix(worker): Avoid Pipelines for taskiq drops

[nellh]

This would sometimes schedule tasks on the wrong worker, avoiding the pipeline construct solves this. Instead we use one longer running tasks which also has an easier to track lifetime.

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.02%. Comparing base (362ec03) to head (760d6fd).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
services/datalad/datalad_service/tasks/publish.py	76.47%	4 Missing ⚠️
...rvices/datalad/datalad_service/handlers/publish.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3648      +/-   ##
==========================================
+ Coverage   42.99%   43.02%   +0.03%     
==========================================
  Files         636      636              
  Lines       33875    33877       +2     
  Branches     1515     1515              
==========================================
+ Hits        14565    14577      +12     
+ Misses      19171    19161      -10     
  Partials      139      139              

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