Adds a mapping log to plumbing destroying ducts (#94159)

## About The Pull Request

<img width="1321" height="91" alt="image"
src="https://github.com/user-attachments/assets/a50510da-5489-46d3-a56f-b47128f72431"
/>

This will trigger if you create a plumbing machine on top of a duct, but
we're only caring for roundstart here?
I can't use banned neighbors because I don't want to add a list that
must be constantly maintained for every machine that uses the component.

## Why It's Good For The Game

Prior to this PR, this is the only error you'd get about this occuring
<img width="944" height="60" alt="image"
src="https://github.com/user-attachments/assets/849d86e9-5ea4-4748-aa2a-7cf86386b7f3"
/>

Very undescriptive and I had to go through every single duct on a map to
figure out what was being deleted, turns out it was a single duct being
mapped on top of a toilet.

code/datums/components/plumbing/_plumbing.dm

@@ -244,6 +244,8 @@
 	// Machines disable when they get moved
 	for(var/obj/machinery/duct/duct in parent_movable.loc)
 		if(duct.anchored && (duct.duct_layer & ducting_layer))
+			log_mapping("[duct.name] was found at [AREACOORD(parent_movable)] spawning on top of [parent_movable.name], \
+				which should not occur as it takes ducts itself!")
 			duct.disconnect_duct()
 
 	if(demand_connects)