add fault-tolerance for global random state in map-style datasets

[awaelchli]

What does this PR do?

Follow up to #3022 and #8891

Add support for reloading global random state in a map-style dataset when fault-tolerant training is enabled.

Not implemented (will be addressed in future PR):

• iterable datasets
• multiple training dataloaders (combined loader)
• local random state through generators inside the dataset
• when num_workers=N, we cannot be fault-tolerant during the first N batches being processed/fetched.

Future follow up PRs will cover:

• the above listed items
• benchmarking

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I made sure I had fun coding 🙃

[Borda]

LGTM :]