[Llama4] Update `attn_temperature_tuning` (#19997)

Signed-off-by: Brayden Zhong <b8zhong@uwaterloo.ca>

vllm/model_executor/models/llama4.py

@@ -148,9 +148,8 @@ class Llama4Attention(nn.Module):
         self.q_size = self.num_heads * self.head_dim
         self.kv_size = self.num_kv_heads * self.head_dim
         self.scaling = self.head_dim**-0.5
-        # TODO: attn_temperature_tuning should be a bool in huggingface
         self.attn_temperature_tuning = self.nope and \
-            config.attn_temperature_tuning > 0
+            config.attn_temperature_tuning
 
         self.floor_scale = getattr(config, "floor_scale", 8192.0)
         self.attn_scale = getattr(config, "attn_scale", 0.1)