attn_temperature_tuning should be bool

https://huggingface.slack.com/archives/C01N44FJDHT/p1773741769897869?thread_ts=1773669282.282689&cid=C01N44FJDHT

config.json

@@ -6,7 +6,7 @@
   "attention_chunk_size": 8192,
   "attention_dropout": 0.0,
   "attn_scale": 0.1,
-  "attn_temperature_tuning": 4,
+  "attn_temperature_tuning": true,
   "bos_token_id": 1,
   "eos_token_id": 2,
   "floor_scale": 8192,