[lldb] Fix Python GIL-not-held issue in CreateStructuredDataFromScriptObject (#136309)

TestStructuredDataAPI.py fails with Python debug build ver. 3.12+ due to
call to Py_XINCREF while GIL is not held.

Author: dzhidzhoev

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp

@@ -1569,10 +1569,10 @@ StructuredData::ObjectSP
 ScriptInterpreterPythonImpl::CreateStructuredDataFromScriptObject(
     ScriptObject obj) {
   void *ptr = const_cast<void *>(obj.GetPointer());
+  Locker py_lock(this, Locker::AcquireLock | Locker::NoSTDIN, Locker::FreeLock);
   PythonObject py_obj(PyRefType::Borrowed, static_cast<PyObject *>(ptr));
   if (!py_obj.IsValid() || py_obj.IsNone())
     return {};
-  Locker py_lock(this, Locker::AcquireLock | Locker::NoSTDIN, Locker::FreeLock);
   return py_obj.CreateStructuredObject();
 }