afterattack now returns a flag if it's reasonable to suspect the user intends to act on an item (#72320)

Necessary for #72292 to work effectively, and probably not very useful
out of that context. Split out of its own PR because this is long and
boring.

I want to make sure that we're catching actual mistakes there, and not
just experiencing side effects of how shitty the attack chain is.

code/modules/mapfluff/ruins/spaceruin_code/hilbertshotel.dm

@@ -478,9 +478,10 @@ GLOBAL_VAR_INIT(hhMysteryRoomNumber, rand(1, 999999))
 /obj/item/analyzer/hilbertsanalyzer/afterattack(atom/target, mob/user, proximity)
 	. = ..()
 	if(istype(target, /obj/item/hilbertshotel))
+		. |= AFTERATTACK_PROCESSED_ITEM
 		if(!proximity)
 			to_chat(user, span_warning("It's to far away to scan!"))
-			return
+			return .
 		var/obj/item/hilbertshotel/sphere = target
 		if(sphere.activeRooms.len)
 			to_chat(user, "Currently Occupied Rooms:")
@@ -494,6 +495,7 @@ GLOBAL_VAR_INIT(hhMysteryRoomNumber, rand(1, 999999))
 				to_chat(user, roomnumber)
 		else
 			to_chat(user, "No vacated rooms.")
+		return .
 
 /obj/effect/landmark/lift_id/hilbert
 	specific_lift_id = HILBERT_TRAM