model: support nvidia/Llama-3_3-Nemotron-Super-49B-v1 (#9067)

Co-authored-by: Kyle Huang <kylhuang@nvidia.com>

python/sglang/test/runners.py

@@ -231,11 +231,14 @@ class HFRunner:
 
         # Load the model and tokenizer
         if self.model_type == "generation":
-            config = AutoConfig.from_pretrained(model_path)
-            if model_archs := getattr(config, "architectures"):
-                model_cls = getattr(transformers, model_archs[0])
-            else:
+            config = AutoConfig.from_pretrained(
+                model_path, trust_remote_code=self.trust_remote_code
+            )
+            if self.trust_remote_code:
                 model_cls = AutoModelForCausalLM
+            else:
+                model_arch = getattr(config, "architectures")[0]
+                model_cls = getattr(transformers, model_arch)
             self.base_model = model_cls.from_pretrained(
                 model_path,
                 torch_dtype=torch_dtype,