Fix some phased shadekin interactions (#19587)

* block those

* disposals

* wheelchair incorp check

* fix those

* not the issue

---------

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/game/objects/structures/stool_bed_chair_nest/wheelchair.dm

@@ -232,6 +232,8 @@
 	..()
 
 /obj/structure/bed/chair/wheelchair/MouseDrop(over_object, src_location, over_location)
+	if(usr.is_incorporeal())
+		return
 	..()
 	if((over_object == usr && (in_range(src, usr) || usr.contents.Find(src))))
 		if(!ishuman(usr))	return