tiny fix about badam

src/llamafactory/train/rm/trainer.py

@@ -72,7 +72,8 @@ class PairwiseTrainer(Trainer):
         self.processor = processor
         self.can_return_loss = True  # override property to return eval_loss
         if finetuning_args.use_badam:
-            from badam import clip_grad_norm_old_version, BAdamCallback
+            from badam import BAdamCallback, clip_grad_norm_old_version
+
             self.accelerator.clip_grad_norm_ = MethodType(clip_grad_norm_old_version, self.accelerator)
             self.callback_handler.add_callback(BAdamCallback)