[issue43916] Mark static types newly converted to heap types as immutable: add Py_TPFLAGS_DISALLOW_INSTANTIATION type flag

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

The build errors were in the CI, but because Python doesn't complain if it cannot build a module, then we never catched this. I have opened https://github.com/python/cpython/pull/25768 to fix it to unblock the release, since the curses module is broken currently.

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