Refactor Logged class __new__ method return type annotation

[RamogninoF]

This pull request makes a minor update to the __new__ method signature in python_utils/logger.py, removing the unnecessary explicit return type annotation.

The explicit type-hint over-constrained the return to Logged instances also for derived classes. Therefore, instantiation of derived class tricked the type-checker to thinking it was instantiating a Logged instance, instead of the an instance of the derived class.

[gemini-code-assist]

Code Review

This pull request removes the explicit return type hint from the new method in python_utils/logger.py. The feedback suggests using types.Self as a return type instead of removing the annotation entirely, which ensures better type safety for subclasses and maintains consistent type hinting across the codebase.