Changed world_size() to get_world_size() bugfix
Edited one line in src/transormers/generation/utils.py. Changed dist.….world_size() to dist.get_world_size() since world_size() doesn't exist in pytorch.dist.

# What does this PR do?

Fixes # Pytorch 2 generation/utils.py , 'torch.distributed' has no attribute 'world_size' #22375
https://github.com/huggingface/transformers/issues/22375


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- [ ] Did you write any new necessary tests?

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Library:

- generate: @gante


_The documentation is not available anymore as the PR was closed or merged._<|||||>BTW, there is a CI error due to this branch being created from an older version of `main` -- you should rebase with `main` to make our CI green <|||||>> BTW, there is a CI error due to this branch being created from an older version of `main` -- you should rebase with `main` to make our CI green

Funny, GitHub is telling me that "This branch is 1 commit ahead of huggingface:main." and also tells me the fork is already synced when I try syncing.
Also when I fetch upstream and rebase as in the contribution guidlines I am told "Current branch changed-world-size-to-get-world-size-in-generation-utils is up to date."

Maybe I missed something, but it seems the only difference in codebase is the 1 line change. Maybe it's worth it to re-run the ci/circleci: tests_torch_and_tf?<|||||>@Charlie-Bell my apologies, there is indeed a problem in `main` I've found after writing the comment above! #22383 will fix it -- apologies for the confusion 🙏 