fix(eth): reject negative slot identifiers#253
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Slot block and state identifiers were parsed with
ParseInt, so a negative value like-1was accepted as a valid slot and then wrapped to a hugeuint64. It only ever produced a store miss, but the request was treated as well-formed rather than rejected.Slot parsing now uses
ParseUint, so negative identifiers are classified as invalid and return a 400. This also removes the now-unnecessary gosec suppression on the slot conversion.