Fix: don't add frozen modules to builtinModules

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/ImpModuleBuiltins.java

@@ -646,7 +646,7 @@ public static Object importFrozenModuleObject(Python3Core core, String name, boo
 
         PCode code = (PCode) MarshalModuleBuiltins.Marshal.load(info.data, info.size);
 
-        PythonModule module = core.createModule(name);
+        PythonModule module = core.factory().createPythonModule(name);
 
         if (info.isPackage) {
             /* Set __path__ to the empty list */