“Boneless” is not a “style” in the same way that a sauce can be different. If you ordered a porterhouse and got a NY strip, that’s not a different style- it’s a different cut of meat. (They’re opposite sides of a T bone.) saying a NY strip is a “style” of porterhouse isn’t anymore right.
If you order “boneless” wings, you expect them to be without bones. (This is both true of the final customer as well as the restaurant.). Expecting the customer at a restaurant to check their food to make sure it’s safe is weird. Unless they get to walk in the back and check everything, they can’t be reasonably expected to know that “oh hey, we might have shit QC.”
Ultimately, the restaurant had a duty of care to ensure the food was safe. And guess what? So did the supplier. They’re both negligent.