Make the ethereum firehose codec less crashy #5314
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The decoder for Ethereum firehose is full of
unwrap,expectandpanic. This removes two potential crashes that we encountered in production.The code is still pretty scary as it takes in data from the network and will crash when it doesn't conform to its implicit assumptions. For example, even though the block header is in an
Optionin the protobuf, the code will just panic when it is everNone.