This changed, compared to master. The service is now "org.freedesktop.UPower.PowerProfiles".
On my arch system, net.hadess.PowerProfiles is provided as well as "org.freedesktop.UPower.PowerProfiles", must have been for a while to allow transitioning to new proper freedesktop namespace.
This changed 8 months ago with release 0.20:
https://gitlab.freedesktop.org/upower/power-profiles-daemon/-/releases/0.20
Are there distros shipping 6.2 with power-profiles-daemon not 0.2 ?
https://packages.ubuntu.com/noble/power-profiles-daemon ubuntu LTS uses 0.21 so we should be good.