fix: use --no-deps for AMD Windows torch wheel install

uv's resolver looks up rocm[libraries]==0.1.dev0 on PyPI during
dependency resolution before downloading any wheels, and fails because
the package doesn't exist on PyPI. --no-deps skips resolution entirely
and installs all 5 AMD wheels directly. The GPU runtime dependency is
satisfied by the HIP SDK, not a Python package.

studio/install_python_stack.py

@@ -334,6 +334,7 @@ def _ensure_rocm_torch() -> None:
             f"ROCm torch (Windows, {rel_tag})",
             "--force-reinstall",
             "--no-cache-dir",
+            "--no-deps",
             *wheel_urls,
             constrain = False,
         )