fixup! train: Return MLflow tracking information

Signed-off-by: Phoevos Kalemkeris <[email protected]>

app/trainers/base.py

@@ -35,17 +35,17 @@ def __init__(self, config: Settings, model_name: str) -> None:
     def model_name(self) -> str:
         return self._model_name
 
+    @model_name.setter
+    def model_name(self, model_name: str) -> None:
+        self._model_name = model_name
+
     @property
     def experiment_id(self) -> str:
-        return self._experiment_id
+        return self._experiment_id or ""
 
     @property
     def run_id(self) -> str:
-        return self._run_id
-
-    @model_name.setter
-    def model_name(self, model_name: str) -> None:
-        self._model_name = model_name
+        return self._run_id or ""
 
     @final
     def start_training(self,