Flag `--use-server-list-ping` for subcommand `export-for-prometheus`?

Hello! I'm curious about how a Java Minecraft server on version 1.6.4 can be monitored using the subcommand export-for-prometheus. A while ago the flag --use-server-list-ping was added for the status subcommand in #10, but it is not available for the export-for-prometheus subcommand if I'm correct? I have a few modded servers running on version 1.6.4 (Crash Landing) and I'd love to monitor them using this mc-monitor command/agent.

Below is a minimal working configuration to reproduce the error:

---
services:
  server:
    image: itzg/minecraft-server:2025.6.2-java8
    container_name: mc_server
    restart: unless-stopped
    networks:
      - mc_monitoring_network
    ports:
      - 25565:25565
    environment:
      - EULA=TRUE
      - VERSION=1.6.4
    volumes:
      - mc_data:/data
    tty: true
    stdin_open: true
    healthcheck:
      test: "mc-monitor status --use-server-list-ping"
      start_period: 16s
      interval: 5s
      retries: 20
  monitor:
    image: itzg/mc-monitor:0.15.6
    container_name: mc_monitor
    restart: unless-stopped
    command: export-for-prometheus
    networks:
      - mc_monitoring_network
    ports:
      - 8080:8080
    environment:
      - DEBUG=TRUE
      - EXPORT_SERVERS=server

networks:
  mc_monitoring_network:

volumes:
  mc_data:
    name: mc_data

The healthcheck of server is configured to use --use-server-list-ping. This indeed works as running docker compose ps produces the following output, first indicating an unhealthy state but later healthy once server is fully started:

NAME	IMAGE	...	CREATED	STATUS	...
mc_monitor	itzg/mc-monitor:0.15.6	...	36 seconds ago	Up 36 seconds	...
mc_server	itzg/minecraft-server:2025.6.2-java8	...	36 seconds ago	Up 36 seconds (healthy)	...

When visiting http://localhost:8080/metrics, monitor queries server and server produces an error. Running docker compose logs --tail 9 server outputs this error:

mc_server  | java.io.IOException: Received string length is less than zero! Weird string!
mc_server  |    at ey.a(SourceFile:243)
mc_server  |    at eb.a(SourceFile:17)
mc_server  |    at ey.a(SourceFile:197)
mc_server  |    at co.i(SourceFile:249)
mc_server  |    at co.c(SourceFile:17)
mc_server  |    at cp.run(SourceFile:94)
mc_server  | 2025-07-16 18:32:30 [INFO] Disconnecting /172.19.0.2:42818: Protocol error
mc_server  | 2025-07-16 18:32:30 [INFO] /172.19.0.2:42818 lost connection

Currently monitor also falsely reports that server is unhealthy in the following metric:

# HELP minecraft_status_healthy Indicates if the server is healthy (1) or not (0)
# TYPE minecraft_status_healthy gauge
minecraft_status_healthy{server_edition="java",server_host="server",server_port="25565",server_version=""} 0

Please note that I completely understand it when this problem won't be fixed. Minecraft version 1.6.4 is very old and I can imagine you have other higher priorities 😅.