There is no official statement about this issue but you can search for user reports like "M2 MacBook Air black screen" or something similar. It is not uncommon.
In older versions of macOS you can simply try two things:
* Press Esc in locking screen, or
* Press "Sleep" from the menu bar icon and then press Esc immediately
If the machine crashes/reboots, the sensor is bad and it needs to be replaced. Apple Store replaces the whole display assembly.
I was wondering this myself. I've had three mac air/books that simply failed to turn the display on. I've heard (from a third party repairer) that it is not uncommon.
