make movie_scene_seg isolated

tests/run_config.yaml

@@ -10,6 +10,7 @@ isolated:  # test cases that may require excessive anmount of GPU memory, which
   - test_easycv_trainer.py
   - test_segformer.py
   - test_segmentation_pipeline.py
+  - test_movie_scene_segmentation.py
 
 envs:
   default: # default env, case not in other env will in default, pytorch.