Problem: chainID is not initialized under grpc only mode

[yihuang]

System info: ethermint main

Steps to reproduce:

1. start a grpc only node
2. call TraceTx through debug_traceTransaction.
3. it complains: invalid chain id for signer

Expected behavior: traceTransaction should work

Actual behavior: the chain id in the evm keeper is not initialized without abci event.

Additional info: [Include gist of relevant config, logs, etc.]

[yihuang]

Basically, in grpc query, we can't reply on ctx for anything other than the block height, because those are either empty, or don't match the block we are processing, we need to pass them through the request, json-rpc service can fill them with information from the block header.

[VictorTrustyDev]

This can be resolved by sending blockHeader proto the same as send proposerAddress like the fix you did few days ago. It contains both chain id and proposerAddress so actually we can replace the proposerAddress field with blockHeader field

[yihuang]

yeah, or adding a chain-id field to some requests that needed, because different grpc queries need different fields in the header.

[VictorTrustyDev]

proposer address and chain id are all problems I got while developing my product until now. Seems no longer any un-expected issue like this would happens in the future