Miscellaneous fixes

[arogachev]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌

[what-the-diff[bot]]

PR Summary

• Update to Database Migration Configuration The configuration file for 'db-migration' has been modified to widen the scope of data it works with. This was achieved by adding two new paths to 'sourcePaths' array specifically pointing at 'items' and 'assignments' folders in 'rbac-db'. This change allows the migration tool to access and manipulate more data, improving the functionality.

• Refactor of Test Suite In the test suite, a new method named 'traitCreateManager' was introduced as a protected version of the existing 'createManager' method. This essentially cloaks the original method providing an additional layer of security. Also, the 'TransactionalManagerDecorator' method was updated to use the new 'traitCreateManager' method, leading to an overall enhancement to the system stability and security during testing.

[codecov[bot]]

Codecov Report

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

Comparison is base (8b775e3) 100.00% compared to head (9dafaac) 100.00%.

:exclamation: Current head 9dafaac differs from pull request most recent head e7152c4. Consider uploading reports for the commit e7152c4 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #69 +/- ## =========================================== Coverage 100.00% 100.00% Complexity 158 158 =========================================== Files 11 11 Lines 661 661 =========================================== Hits 661 661 ```

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