Those are policy choices for governments to make in terms of what the mix will be to reach net zero. It's also impossible to know exactly what technologies will advance further between now and 2050.
As you foresaw, I can't answer the question in terms of what role it will play. It is presently part of the mix in energy in Canada and other countries. It remains to be seen what percentage of our energy mix will be provided by nuclear between now and 2030, and then between 2030 and 2050 in terms of the next two targets.