change hidden dim to 128

Author: chilo-ms

onnxruntime/test/providers/nv_tensorrt_rtx/test_nv_trt_rtx_ep_util.cc

@@ -277,7 +277,7 @@ void CreateLargeLLMModel(const PathString& model_path, const PathString& externa
   // Model parameters (example: 24 layers, 4096 hidden dim, 32 attention heads, 8 kv heads => GQA)
   int batch_size = 1;
   int num_layers = 1;
-  int hidden_dim = 512;
+  int hidden_dim = 128;
   int q_num_heads = 8;
   int kv_num_heads = 1;  // GQA: q_num_heads > kv_num_heads, and divisible.
   int seq_length = 128;  // Short, for demonstration.