Code examples missing in MaskedTensor Overview tutorial

[bdol]

📚 The doc issue

Apologies in advance if the tutorials section of the docs has a separate issue tracker.

Currently the code examples in the MaskedTensor Overview tutorial are not being rendered or are missing:

This also seems to be an issue on the Sparsity page and the Advanced Semantics page:

Copying/pasting the code block also does not reveal any hidden information, so this may not just be a rendering bug and perhaps the underlying data is missing.

Suggest a potential alternative/fix

I'm able to view versioned files in the API docs, but I'm not sure if there's a way to view old versions of tutorial documents.

cc @svekars @sekyondaMeta @AlannaBurke

[malfet]

Moving to tutorials repo, as it's not really a PyTorch problem