functionalization: make view_copy outputs always contiguous (#85747)
This fixes an issue with mobile: The output of view_copy ops should always be contiguous.
Later, we can consider adding optional arguments to the `view_copy()` functions to let you explicitly say what the contiguity of the output can be (e.g. channels_last)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/85747
Approved by: https://github.com/ezyang
