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/modules/awaymissions/mission_code/beach.dm

@@ -88,6 +88,10 @@
 	heavyfootstep = FOOTSTEP_WATER
 	smoothing_groups = list(SMOOTH_GROUP_BEACH_WATER)
 
+/turf/simulated/floor/beach/away/water/Initialize(mapload)
+	. = ..()
+	RegisterSignal(src, COMSIG_ATOM_INITIALIZED_ON, .proc/InitializedOn)
+
 /turf/simulated/floor/beach/away/water/Entered(atom/movable/AM, atom/OldLoc)
 	. = ..()
 	if(!linkedcontroller)
@@ -102,7 +106,7 @@
 	if(ismob(AM))
 		linkedcontroller.mobinpool -= AM
 
-/turf/simulated/floor/beach/away/water/InitializedOn(atom/A)
+/turf/simulated/floor/beach/away/water/proc/InitializedOn(atom/A)
 	if(!linkedcontroller)
 		return
 	if(istype(A, /obj/effect/decal/cleanable)) // Better a typecheck than looping through thousands of turfs everyday