[EVM] e2e test to ensure setting Chain ID works

[gztensor]

The JS test is needed to verify that the new extrinsic in admin-utils pallet set_evm_chain_id in fact changes the chain ID that Ethereum RPC returns for eth_chainId request. Currently the verification is done manually using this cli command:

curl http://localhost:9944/ -X POST -H "Content-Type: application/json" --data '{"method":"eth_chainId","params":[],"id":1,"jsonrpc":"2.0"}'

[open-junius]

New test case is added in substrate js test repo, the e2e test is ok against feat/admin-set-evm-chain-id branch.