ChunkState Challenge might have a bug

[evgenykuzyakov]

This line might be invalid: https://github.com/nearprotocol/nearcore/blob/73c0e7cd86068eeafdeed067f0f6d65cb0c479fe/chain/chain/src/validate.rs#L265

Some of the thrown errors might be a valid challenge. @ilblackdragon please verify and if the case, reassign and I'll fix it later.

[stale[bot]]

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