WSL で systemctl が使えない（System has not been booted with systemd）

sudo systemctl status ssh

System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down

$ cat /etc/wsl.conf
[boot]
systemd=true

$ ps -p 1 -o comm=
systemd

$ systemctl is-system-running
running

$ printf '[boot]\nsystemd=false\n' > /etc/wsl.conf

$ wsl --terminate Ubuntu
この操作を正しく終了しました。

$ ps -p 1 -o comm=
init(Ubuntu)

$ systemctl status ssh
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to system scope bus via local transport: Host is down

$ printf '[boot]\nsystemd=true\n' > /etc/wsl.conf

$ wsl --terminate Ubuntu
この操作を正しく終了しました。

$ ps -p 1 -o comm=
systemd

$ systemctl list-units --type=service --state=running
  UNIT                        LOAD   ACTIVE SUB     DESCRIPTION
  chrony.service              loaded active running chrony, an NTP client/server
  console-getty.service       loaded active running Console Getty
  cron.service                loaded active running Regular background program processing daemon
  dbus.service                loaded active running D-Bus System Message Bus
  getty@tty1.service          loaded active running Getty on tty1
  networkd-dispatcher.service loaded active running Dispatcher daemon for systemd-networkd
  rsyslog.service             loaded active running System Logging Service
  snapd.service               loaded active running Snap Daemon
  systemd-journald.service    loaded active running Journal Service
  systemd-logind.service      loaded active running User Login Management
  systemd-resolved.service    loaded active running Network Name Resolution
  systemd-timedated.service   loaded active running Time & Date Service
  systemd-udevd.service       loaded active running Rule-based Manager for Device Events and Files
  unattended-upgrades.service loaded active running Unattended Upgrades Shutdown
  user@0.service              loaded active running User Manager for UID 0
  wsl-pro.service             loaded active running Bridge to Ubuntu Pro agent on Windows
 
Legend: LOAD   → Reflects whether the unit definition was properly loaded.
        ACTIVE → The high-level unit activation state, i.e. generalization of SUB.
        SUB    → The low-level unit activation state, values depend on unit type.
 
16 loaded units listed.

sudo tee /etc/wsl.conf > /dev/null <<'EOF'
[boot]
systemd=true
EOF

wsl --shutdown

ps -p 1 -o comm=
systemctl list-units --type=service --state=running

wsl --version

wsl --update

wsl -l -v
wsl --set-version Ubuntu 2