Fix: pip error

gradio_app.py

@@ -68,7 +68,8 @@ if ENV == 'Huggingface':
     
     print("Installing custom_rasterizer...")
     subprocess.run(
-        shlex.split("pip install -e ./hy3dpaint/custom_rasterizer"),
+        "cd ./hy3dpaint/custom_rasterizer && pip install -e .",
+        shell=True,
         check=True
     )