style: fix whitespace linting errors

Author: hqkqn32

src/transformers/data/data_collator.py

@@ -1417,7 +1417,7 @@ def __call__(self, features, return_tensors=None, separator_id=None):
             if hasattr(input_ids, "tolist"):
                 input_ids = input_ids.tolist()
             batch["input_ids"] += input_ids
-    
+
             if is_labels_provided:
                 labels = sample["labels"]
                 # Convert to list if tensor

tests/trainer/test_data_collator.py

@@ -1982,16 +1982,16 @@ def test_flattening_with_tensor_labels(self):
             },
         ]
         collator = DataCollatorWithFlattening(return_tensors="pt")
-        
+
         # This should not raise TypeError anymore
         batch = collator(features)
-        
+
         # Verify the output
         self.assertIsInstance(batch, dict)
         self.assertIn("input_ids", batch)
         self.assertIn("labels", batch)
         self.assertIn("position_ids", batch)
-        
+
         # Check shapes
         self.assertEqual(batch["input_ids"].shape, (1, 7))  # 4 + 3 tokens
         self.assertEqual(batch["labels"].shape, (1, 7))
@@ -2011,7 +2011,7 @@ def test_flattening_with_list_labels(self):
         ]
         collator = DataCollatorWithFlattening(return_tensors="pt")
         batch = collator(features)
-        
+
         # Verify it still works with lists
         self.assertIsInstance(batch, dict)
         self.assertEqual(batch["input_ids"].shape, (1, 7))