Spec: https://drafts.csswg.org/resize-observer/#calculate-depth-for-node

Implementation:

This is almost correct, but I think the spec actually wants the inclusive ancestor path. The - 1 was attempting to give us the noninclusive ancestor path, and removing it allows /resize-observer/notify.html to run to completion.