Doesn't look like it's possible from that.
This is actually the route we were already exploring but havent so far been able to make work.
We're possibly looking at wrapping the installer into a build at hardware deployment time but it's pretty painful that we can't fnd a way to do this using Systems Manager. I mean it's fine when we first roll out the kit but if you pivot at some point (as we've just done) you're left having to insall manually. PITA for us.
I know managemnt are thinking of switching us away from SM into MS 365 enterprise. (We'd get the enterprise device management that way).
Shame really because I like having one window for all of this work.