Simplify Preprocessor logging

[vbanos]

Define seed_id once on logger init instead of calling it on each logger call.

Also, there was a redundant "func": "preprocessor.preprocess which wasn't necessary as we already define that in the component field of the logger.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 14.28571% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.56%. Comparing base (dc1cc5b) to head (403762e).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/pkg/preprocessor/preprocessor.go	14.28%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #419      +/-   ##
==========================================
+ Coverage   55.17%   55.56%   +0.39%     
==========================================
  Files         117      119       +2     
  Lines        7257     7301      +44     
==========================================
+ Hits         4004     4057      +53     
+ Misses       2935     2919      -16     
- Partials      318      325       +7     

Flag	Coverage Δ
e2etests	37.47% <14.28%> (-0.12%)	⬇️
unittests	31.86% <0.00%> (+0.72%)	⬆️

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[NGTmeaty]

Thanks!