[Bug Report] Auto-switch gatherers ignores vertical distance

[nonamethanks]

If you pass above a mining node at max visible distance and you're a botanist (or vice versa), the job switch happens even if you're very, very far away from the node.

See the screenshots below. Note the size of the other character on the ground in the first screenshot, and error message in the second. I was at almost max flying height for the map and it still triggered