`mul`: sparse-dense + sparse-sparse with 0-dims support take 2. (#82962)
This one is a copy of
https://github.com/pytorch/pytorch/pull/81556
https://github.com/pytorch/pytorch/pull/82717
These got reverted due to issues with torchvision.
CC @kit1980 , could you please take over from here?
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82962
Approved by: https://github.com/kit1980
