fixes RPD eating TEG circulators (#16258)

code/game/machinery/pipe/construction.dm

@@ -145,6 +145,8 @@
 	else if(our_rpd.mode == RPD_FLIP_MODE)
 		flip()
 	else if(our_rpd.mode == RPD_DELETE_MODE)
+		if(pipe_type == PIPE_CIRCULATOR) //Skip TEG heat circulators, they aren't really pipes
+			return ..()
 		our_rpd.delete_single_pipe(user, src)
 	else
 		return ..()

code/game/objects/items/weapons/rpd.dm

@@ -142,6 +142,8 @@
 /obj/item/rpd/proc/delete_all_pipes(mob/user, turf/T) //Delete all pipes on a turf
 	var/eaten
 	for(var/obj/item/pipe/P in T)
+		if(P.pipe_type == PIPE_CIRCULATOR) //Skip TEG heat circulators, they aren't really pipes
+			continue
 		QDEL_NULL(P)
 		eaten = TRUE
 	for(var/obj/item/pipe_gsensor/G in T)