Fix Rust heretic's mansus grasp on doors (BeeStation#9783)

* Update rust_lore.dm

Allow doors to be rusted

* Update rust_lore.dm

Shion improvements

* Update rust_lore.dm

code/modules/antagonists/heretic/knowledge/rust_lore.dm

@@ -71,7 +71,16 @@
 
 /datum/heretic_knowledge/rust_fist/proc/on_mansus_grasp(mob/living/source, mob/living/target)
 	SIGNAL_HANDLER
-	if(source.a_intent == INTENT_HARM && !iscarbon(target))
+	var/static/list/always_hit_typecache = typecacheof(list(
+		/mob/living/carbon,
+		/mob/living/silicon,
+		/mob/living/simple_animal/bot,
+		/obj/item/storage/secure/safe/caps_spare,
+		/obj/machinery/door,
+		/obj/mecha
+	))
+	// The reason this is not simply an isturf is because we likely don't want to hit random machinery like holopads and such!
+	if(source.a_intent == INTENT_HARM && !is_type_in_typecache(target, always_hit_typecache))
 		return
 	return target.rust_heretic_act()