update `bos_token_id` and `eos_token_id`

config.json

@@ -8,9 +8,9 @@
     "AutoModelForCausalLM": "modeling_phi.PhiForCausalLM"
   },
   "attention_dropout": 0.0,
-  "bos_token_id": null,
+  "bos_token_id": 50256,
   "embd_pdrop": 0.0,
-  "eos_token_id": null,
+  "eos_token_id": 50256,
   "hidden_act": "gelu_new",
   "hidden_size": 2048,
   "initializer_range": 0.02,