If it wasn't desigend to be disabled it would be buried under multiple and multiple metal layers. You can't "cut" it like a wire. Metal layers run all over the place [1].

Therefore it would have a an e-fuse or a regular old 'current' fuse -- which is just passing a calculated amount of current through an intentionally thin interconnect so that it burns away.

1 - https://static.techspot.com/articles-info/1840/images/2019-0...