fixes the medial wall mask

Author: Andrew Van

tests/wbsurfer/test_movie.py

@@ -14,4 +14,6 @@ def test_scene(dtseries_scene: Path):
     """
     with TemporaryDirectory() as tmp_dir:
         tmp_path = Path(tmp_dir)
-        generate_movie([16000, 16010, 16020], dtseries_scene, "test", tmp_path / "output.mp4")
+        # generate_movie([16000, 16010, 16020], dtseries_scene, "test", tmp_path / "output.mp4")
+        # generate_movie(["174", "25829"], dtseries_scene, "test", tmp_path / "output.mp4")
+        generate_movie(["CORTEX_RIGHT", "28548", "79"], dtseries_scene, "test", "test.mp4", vertex_mode=True)