Gutted for you mate
I don't know about one of the dent pros getting it out but i would have thought looking at it it would be a mare, but then i've not see any new body shop gear for years mate so i'm just guessing.
That would have needed a hole drilled in it to pull it out, nice easy repair with filler if you were thinking of having paint on the bonnet anyway. If the rest of the bonnet doesn't need paint then it would be easy to blend too as they could just blow over the small area and blend in on the radi.