The entire display of my 15-in M3 MacBook Air has been replaced, plus the ambient light sensor. All of this was because the compressed rubber gasket between the edge of the glass and the inner edge of the aluminium shell of the cover became partially dislodged. The value of the repair was A$932, but I paid nothing because it was done under warranty.
So all the chips and scratches that were on the edges of the lid plus a scratch on the glass itself are gone, replaced with new kit.