Pathing for Storage Compactor needs to be changed

[Targa_X]

Currently when a Duplicant decides to drop items off or pick them up from a Storage Compactor, they choose the closest available one *as the crow flies*!

This means that if they're a level above or below said compactor, they will travel to it, often passing right by other available compactors on the way. In the case of my current base, they're digging out and cleaning up directly beneath several storage compactors on the floor above them. When they need to unload their backpacks, they run all the way to the left, climb a ladder, pass right by an empty compactor at the top of the ladder, and run all the way to the right side of the room to deliver. The code needs to locate the nearest available compactor *along the navigation pathing*.