add Tuple as possible type hint for EvalPredictions label_ids (#14473)

* Update trainer_utils.py

* add Tuple type hints to all label_ids outputs

affects EvalLoopOutput and PredicctionOutput

src/transformers/trainer_utils.py

@@ -75,19 +75,19 @@ class EvalPrediction(NamedTuple):
     """
 
     predictions: Union[np.ndarray, Tuple[np.ndarray]]
-    label_ids: np.ndarray
+    label_ids: Union[np.ndarray, Tuple[np.ndarray]]
 
 
 class EvalLoopOutput(NamedTuple):
     predictions: Union[np.ndarray, Tuple[np.ndarray]]
-    label_ids: Optional[np.ndarray]
+    label_ids: Optional[Union[np.ndarray, Tuple[np.ndarray]]]
     metrics: Optional[Dict[str, float]]
     num_samples: Optional[int]
 
 
 class PredictionOutput(NamedTuple):
     predictions: Union[np.ndarray, Tuple[np.ndarray]]
-    label_ids: Optional[np.ndarray]
+    label_ids: Optional[Union[np.ndarray, Tuple[np.ndarray]]]
     metrics: Optional[Dict[str, float]]