eject (monitor command) not work for blockdev cdrom
Description of problem:
cdrom1 device work fine, all files reads, but when i whant to eject CD-ROM disk from device by telnet monitor, it not work.
Steps to reproduce:
1. Connect to monitor with
```
telnet 127.0.0.1 9100
(QEMU 5.2.0 monitor - type 'help' for more information)
```

2. Show block devices
```
info block
cdrom1-format: /mnt/soft/QEMU/Windows VirtIO Drivers/virtio-win-0.1.208-1.iso (raw, read-only)
    Attached to:      cdrom1
    Removable device: not locked, tray closed
    Cache mode:       writeback
```

3. Send eject commands
```
eject cdrom1
Error: Device 'cdrom1' not found
eject cdrom1-format
Error: Device 'cdrom1-format' not found
eject cdrom1-storage
Error: Device 'cdrom1-storage' not found
```
Additional information:
When i run qemu with next lines (replace -blockdev to -drive):
```
-device ide-cd,bus=ide.1,drive=cdrom1,id=idecd1,bootindex=2
-drive if=none,id=cdrom1,media=cdrom,readonly=on,file="/mnt/soft/QEMU/Windows VirtIO Drivers/virtio-win-0.1.208-1.iso"
```

eject cdrom1 command work fine

```
info block
cdrom1 (#block133): /mnt/soft/QEMU/Windows VirtIO Drivers/virtio-win-0.1.208-1.iso (raw, read-only)
    Attached to:      idecd1
    Removable device: not locked, tray closed
    Cache mode:       writeback
eject cdrom1
```

Also i found a similar bug description on this link https://bugs.launchpad.net/qemu/+bug/1799766