- Replaced Redis-based locking mechanism with database-based `StoredObjectLock` management using `EntityManagerInterface`.
- Integrated `MockClock` and `Security` components for lock timing and user association.
- Updated test cases to include database persistence and user assignment during lock operations.
- Implemented `onKernelTerminate` event listener to handle deferred database flush for lock updates.
This change is made to comply with the new Symfony standards and to avoid deprecation warnings for future versions. The update touches various functionalities, including retrieving EntityManagerInterface instance and various service classes within the test files.
