SIENTIAPDE-1646

Refactor ModelMetrics to utilize DriftAnalysis for drift detection

- Replaced ModelAnalysis with DriftAnalysis in the ModelMetrics class to enhance drift detection capabilities.
- Updated method signatures and documentation to reflect the changes in target_name and return values.
- Adjusted data handling to ensure compatibility with the new analysis methods and improved clarity in the drift metrics dataframe preparation.

tests/conftest.py

@@ -3,19 +3,6 @@ import os
 from sientia_do.temporal.activities.postgres_sync import Postgres
 
 
-def _noop_postgres_del(_self):
-    """
-    Unit tests use MagicMock metrics controllers; postgres_sync.Postgres.__del__ calls
-    close() during GC and triggers async shutdown. Explicit ``close()`` is covered in tests.
-    """
-    return None
-
-
-Postgres.__del__ = _noop_postgres_del  # type: ignore[method-assign]
-
-from sientia_do.temporal.activities.postgres_sync import Postgres
-
-
 def _noop_postgres_del(_self):
     """
     Unit tests use MagicMock metrics controllers; postgres_sync.Postgres.__del__ calls