Curses doesn't display octants

[Ram Rachum]

Hello curses maintainers,

I think that curses may have a bug which causes it to not be able to display octant characters correctly. Instead it displays blank space:

Please see this bug report to CPython: https://github.com/python/cpython/issues/127795

See especially the message by midichef in that issue that gives more context and shows that the problem might be with the `ncurses` library.

Thanks for your help,

Ram Rachum.