fix: contentbus-id as surrogate key for 404 response

[stefan-guggisberg]

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (dcb0403) to head (e0ac46c). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #629 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 45 45 Lines 3542 3544 +2 ========================================= + Hits 3542 3544 +2 ```

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:tada: This PR is included in version 6.12.7 :tada:

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