Fix decode method in restore to use original tokenizer

adapter.py

@@ -588,8 +588,8 @@ class HFAbRestore(AbRestore):
                 restored_input_ids = input_ids[0].clone()
                 restored_input_ids[masked_positions] = predicted_tokens
                 
-                # Decode back to sequence using the tokenizer's decode method
-                restored_seq = self.tokenizer(restored_input_ids, mode='decode')[0]
+                # Decode back to sequence using the original tokenizer
+                restored_seq = self.tokenizer.tokenizer.decode(restored_input_ids, skip_special_tokens=True)
                 restored_seqs.append(restored_seq)
         
         return np.array(restored_seqs) if len(restored_seqs) > 1 else restored_seqs[0]