fix(load_and_run): fix dump_with_testcase_mge.py with import megbrain

GitOrigin-RevId: 5c1992fb37

sdk/load-and-run/dump_with_testcase_mge.py

@@ -14,7 +14,7 @@ import struct
 import cv2
 import numpy as np
 
-import megbrain as mgb
+import megengine._internal as mgb
 import megengine as mge
 
 logger = mge.get_logger(__name__)