Sliding windows: null fix

More info : https://huggingface.co/mistralai/Mixtral-8x7B-Instruct-v0.1/commit/125c431e2ff41a156b9f9076f744d2f35dd6e67a

config.json

@@ -25,7 +25,7 @@
   "rope_scaling": null,
   "rope_theta": 10000.0,
   "router_aux_loss_coef": 0.001,
-  "sliding_window": 4096,
+  "sliding_window": null,
   "tie_word_embeddings": false,
   "torch_dtype": "float16",
   "transformers_version": "4.37.0.dev0",