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Bug: reversed() on an empty numeric range raises IndexError

Bug: reversed() on an empty numeric range raises IndexError: a task in repo2rlenv-swe-next (Harbor dataset). Calling reversed() on an empty numeric range (e.g., numeric range(0) ) raises an IndexError instead of returning an empty iterator.

The task

Calling `reversed()` on an empty `numeric_range` (e.g., `numeric_range(0)`) raises an `IndexError` instead of returning an empty iterator.

Part of FineEnvs/repo2rlenv-swe-next.