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Replaces InvalidResumeError from the previous commit, which changed the error `interrupt()` documents. `interrupt()` again raises the pydantic `ValidationError`, marked so the new `langgraph.errors.is_invalid_resume` recognizes it. `ToolNode` re-raises those errors instead of reporting them as invalid tool arguments, and falls back to today's behavior with an older `langgraph` that doesn't have the helper.