feat(jsonrpc): keep old err_msg when block range is invalid#6239

CodeNinjaEvan merged 1 commit intotronprotocol:release_v4.8.0tronprotocol/java-tron:release_v4.8.0from

waynercheung:feat/opt_err_msgwaynercheung/java-tron:feat/opt_err_msgCopy head branch name to clipboard