Watchdog App cannot find the watchdog on Raspberry Pi 4 B, which has a watchdog

What type of hardware are you using: Raspberry Pi 3, 4+
What YunoHost version are you running: 12.0.11 (stable)
What app is this about: Watchdog

Describe your issue

I recently got Yunohost up and running, and installed some apps like SearxNG and unattended-upgrades.

I tried to install Watchdog, so that if the system hangs, it will automatically reboot. I doublechecked that the Raspberry Pi 4 B has a hardware watchdog, and in fact sudo wdctl gives me information about it:

$ sudo wdctl
Device:        /dev/watchdog0
Identity:      Broadcom BCM2835 Watchdog timer [version 0]
Timeout:       15 seconds
Timeleft:      14 seconds
Pre-timeout:    0 seconds
FLAG           DESCRIPTION               STATUS BOOT-STATUS
KEEPALIVEPING  Keep alive ping reply          1           0
MAGICCLOSE     Supports magic close char      0           0
SETTIMEOUT     Set timeout (in seconds)       0           0

However, when I try to install the Watchdog app on Yunohost, it fails with the error, “Your server doesn’t seem to have a ‘/dev/watchdog’ device, this certainly means that it has no hardware watchdog device.” See below for the full watchdog install logs.

If it is relevant, I am also using Tailscale, and followed this procedure to get it up and running: Tailscale only Yunohost - possible? how to configure? - #6 by roukydesbois

It seems like the problem may be that the Watchdog looks for /dev/watchdog, but on my system it is /dev/watchdog0 ?

Share relevant logs or error messages

Watchdog: https://paste.yunohost.org/raw/mozexexiza
Diagnosis: https://paste.yunohost.org/raw/oqayobecop