always check for userdirectories in image heap

Author: timfel

mx.graalpython/mx_graalpython.py

@@ -1318,7 +1318,10 @@ def verify_ci(dest_suite, common_ci_dir="ci_common", args=None, ext=('.jsonnet',
             jar_distributions=['graalpython:GRAALPYTHON-LAUNCHER'],
             main_class='com.oracle.graal.python.shell.GraalPythonMain',
             # build_args=['-H:+RemoveSaturatedTypeFlows'],
-            build_args=['-H:+TruffleCheckBlackListedMethods'],
+            build_args=[
+                '-H:+TruffleCheckBlackListedMethods',
+                '-H:+DetectUserDirectoriesInImageHeap',
+            ],
             language='python',
         )
     ],