eth/gasprice: fix eth_feeHistory blobGasUsedRatio divide zero #31663
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The API
eth_feeHistory
returns{"jsonrpc":"2.0","id":1,"error":{"code":-32603,"message":"json: unsupported value: NaN"}}
, when we queryeth_feeHistory
with a old block that without a blob, or when the fieldconfig.blobSchedule.cancun.max
in genesis.config is 0 (that happens for some projects fork geth but they don't have blob).So here we specially handle the case when maxBlobGas == 0 to prevent this issue from happening.