dav1d is required by chromium, electron21, electron25, ffmpeg, ffmpeg4.4, kodi, libavif, libheif, and is optional for vlc.
pacman -Qi dav1d | grep 'Required By\|Optional For'
On this system (KDE stable) everything is current, and there is no conflict indicated. I have only recently reinstalled Kodi, which may have upgraded the libdav1d.so version in the process. This might also be true of the other packages mentioned, if any of them have a freshly updated version available.
Updating or reinstalling any of these might resolve the inconvenience of dav1d being downgraded.
Incidentally, there is some active discussion in [Testing Update 2023-10-11] as I write; as well as (scroll up dude/dudette) in the current thread.
Cheers.