Fix batch request

[toanalien]

Fix batch request from explorer L2

zkevm-explorer-l2        | 2024-01-25T11:27:28.506 application=indexer fetcher=block_catchup first_block_number=1 last_block_number=0 [error] ** (EthereumJSONRPC.DecodeError) Failed to decode Ethereum JSONRPC response:
zkevm-explorer-l2        | 
zkevm-explorer-l2        |   request:
zkevm-explorer-l2        | 
zkevm-explorer-l2        |     url: http://zkevm-explorer-json-rpc:8124
zkevm-explorer-l2        | 
zkevm-explorer-l2        |     body: [{"id":0,"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x1",true]},{"id":1,"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x0",true]}]
zkevm-explorer-l2        | 
zkevm-explorer-l2        |   response:
zkevm-explorer-l2        | 
zkevm-explorer-l2        |     status code: 400
zkevm-explorer-l2        | 
zkevm-explorer-l2        |     body: batch requests are disabled