Function map_commit_error 

fn map_commit_error(source: BoxError, hash: Hash) -> VerifyBlockError

Converts an error from a CommitSemanticallyVerifiedBlock state request into a VerifyBlockError.

The state boxes commit errors as zs::CommitSemanticallyVerifiedError, a newtype around zs::CommitBlockError, so the wrapper must be unwrapped here for is_duplicate_request() and misbehavior_score() to classify duplicate blocks as benign.