Maint drones now return to the drone manufacturer when shutdown (#23367)

* luv me some drones

* uhhh WIP

* ..() moment

* Gaxeer review & misc change

* henri review

* tgui

* boom, i think

* oops

* sirryan review

* final stuff

* lmaooo

* Apply suggestions from code review

Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

---------

Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

code/modules/ruins/ghost_bar.dm

@@ -106,5 +106,9 @@
 	qdel(mob_to_delete)
 
 /proc/dust_if_respawnable(mob/M)
+	if(isdrone(M))
+		var/mob/living/silicon/robot/drone/drone = M
+		drone.shut_down(TRUE)
+		return
 	if(HAS_TRAIT_FROM(M, TRAIT_RESPAWNABLE, GHOST_ROLE))
 		M.dust()