Makes trees transparent if important objects are hiding behind them (#18627)

* tree!

* Update code/modules/admin/verbs/freeze.dm

* yeet

* steel review, animate transparency

* more critical items

* charlie review

* charlie

code/game/objects/structures/aliens.dm

@@ -204,6 +204,7 @@
 	integrity_failure = 5
 	var/status = GROWING	//can be GROWING, GROWN or BURST; all mutually exclusive
 	layer = MOB_LAYER
+	flags_2 = CRITICAL_ATOM_2
 
 /obj/structure/alien/egg/grown
 	status = GROWN

code/game/objects/structures/flora.dm

@@ -10,6 +10,10 @@
 	pixel_x = -16
 	layer = 9
 
+//Adds the transparency component, exists to be overridden for different args.
+/obj/structure/flora/tree/ComponentInitialize()
+	AddComponent(/datum/component/largetransparency)
+
 /obj/structure/flora/tree/pine
 	name = "pine tree"
 	icon = 'icons/obj/flora/pinetrees.dmi'
@@ -28,6 +32,9 @@
 	icon = 'icons/obj/flora/deadtrees.dmi'
 	icon_state = "tree_1"
 
+/obj/structure/flora/tree/dead/ComponentInitialize()
+	AddComponent(/datum/component/largetransparency, 0, 1, 0, 0)
+
 /obj/structure/flora/tree/dead/Initialize(mapload)
 	. = ..()
 	icon_state = "tree_[rand(1, 6)]"
@@ -53,11 +60,17 @@
 	icon_state = "[icon_state][rand(1, 6)]"
 	. = ..()
 
+/obj/structure/flora/tree/jungle/ComponentInitialize()
+	AddComponent(/datum/component/largetransparency, -1, 1, 2, 2)
+
 /obj/structure/flora/tree/jungle/small
 	pixel_y = 0
 	pixel_x = -32
 	icon = 'icons/obj/flora/jungletreesmall.dmi'
 
+/obj/structure/flora/tree/jungle/small/ComponentInitialize()
+	AddComponent(/datum/component/largetransparency)
+
 //grass
 /obj/structure/flora/grass
 	name = "grass"