A lot of readers here, and on Reddit seem to be misunderstanding the situation. The way I understand it, this car was taken in by a garage for 'seat installation'. I presume this means after market seats. The car disabled itself during installation. The OP assumed due to an anti-temper device, but it could have been any failure mode. Most modern cars with airbags will have sensors in the seats to disable some of the…
Agreed, I also really dislike this frequent misuse of the term "bricking". Bricking used to mean getting your device into a permanently unrecoverable state, but these days I see it used so often as just to mean "I can't turn it on right now".
This is about as far from bricked as you can get.