Fix building from source on WSL (#3112)

setup.py

@@ -36,7 +36,7 @@ def _is_neuron() -> bool:
     torch_neuronx_installed = True
     try:
         subprocess.run(["neuron-ls"], capture_output=True, check=True)
-    except FileNotFoundError:
+    except (FileNotFoundError, PermissionError):
         torch_neuronx_installed = False
     return torch_neuronx_installed