[WIP] decoupled webhook processing

[swrichards]

Summary

Issue References

• Taiga User Story:
• Taiga Issue:
• Taiga Dimpact Issue:
• Github Issue:

Checklist

• CHANGELOG.rst updated
  • Deployment notes added
    
  • Breaking changes flagged
    
• Documentation updated
• Codecov report reviewed for untested lines
• Storybook component updated/created
  
• Vitest tests added/updated
• Updated the docker-compose.yml environment variables
  • Created an issue in https://github.com/maykinmedia/charts/ for new
    environment variables

[codecov-commenter]

Codecov Report

❌ Patch coverage is 94.73684% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.49%. Comparing base (c18aaa5) to head (4ab6caa).

Files with missing lines	Patch %	Lines
src/notifications/admin.py	55.17%	13 Missing ⚠️
...rc/notifications/tests/test_notification_record.py	95.41%	5 Missing ⚠️
src/open_inwoner/openzaak/api/views.py	94.44%	2 Missing ⚠️
src/notifications/query.py	97.50%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2032      +/-   ##
===========================================
+ Coverage    92.48%   92.49%   +0.01%     
===========================================
  Files         1212     1217       +5     
  Lines        47545    47908     +363     
===========================================
+ Hits         43971    44313     +342     
- Misses        3574     3595      +21     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.