explicitly set sliding_window to null

config.json

@@ -16,7 +16,7 @@
   "num_key_value_heads": 8,
   "rms_norm_eps": 1e-05,
   "rope_theta": 1000000.0,
-  "sliding_window": 32768,
+  "sliding_window": null,
   "tie_word_embeddings": false,
   "torch_dtype": "bfloat16",
   "transformers_version": "4.39.1",