[Polish extension.h] extension.h add PADDLE_NO_PATHON macro (#51647)

paddle/extension.h

@@ -16,7 +16,7 @@ limitations under the License. */
 
 // All paddle apis in C++ frontend
 #include "paddle/phi/api/all.h"
-// Python bindings for the C++ frontend
-#ifndef PADDLE_ON_INFERENCE
+// Python bindings for the C++ frontend (includes Python.h)
+#if !defined(PADDLE_ON_INFERENCE) && !defined(PADDLE_NO_PYTHON)
 #include "paddle/utils/pybind.h"
 #endif