Changes signals In item_scaling to fix inventory scaling (#72696)

## About The Pull Request
Fixes #72601 which finally allows item scalable objects to properly
scale to large again when inside an inventory.
Replaces and removes signals that don't seem to effect the item itself.
## Why It's Good For The Game
Can finally see cards in ones binder easily, and allows future items
with item_scaling to properly work.
## Changelog
🆑
fix: fixed Item scaling objects not properly scaling in inventory slots.
/🆑

code/datums/elements/item_scaling.dm

@@ -42,10 +42,8 @@
 	// Make sure overlays also inherit the scaling.
 	ADD_KEEP_TOGETHER(target, ITEM_SCALING_TRAIT)
 
-	// Object scaled when dropped/thrown OR when exiting a storage object.
-	RegisterSignals(target, list(COMSIG_ITEM_DROPPED, COMSIG_ATOM_EXITED), PROC_REF(scale_overworld))
-	// Object scaled when placed in an inventory slot OR when entering a storage component.
-	RegisterSignals(target, list(COMSIG_ITEM_EQUIPPED, COMSIG_ATOM_ENTERED), PROC_REF(scale_storage))
+	// When moved sends a signal.
+	RegisterSignal(target, COMSIG_MOVABLE_MOVED, PROC_REF(scale_by_loc))
 
 /**
  * Detach proc for the item_scaling element.
@@ -55,12 +53,7 @@
  * * target - Datum which the element is attached to.
  */
 /datum/element/item_scaling/Detach(atom/target)
-	UnregisterSignal(target, list(
-		COMSIG_ITEM_PICKUP,
-		COMSIG_ITEM_DROPPED,
-		COMSIG_ATOM_ENTERED,
-		COMSIG_ATOM_EXITED,
-	))
+	UnregisterSignal(target, COMSIG_MOVABLE_MOVED)
 
 	REMOVE_KEEP_TOGETHER(target, ITEM_SCALING_TRAIT)
 
@@ -81,8 +74,15 @@
 	var/matrix/M = matrix()
 	scalable_object.transform = M.Scale(scaling)
 
+//Grabs any move signals and checks its loc, properly scaling it when in storage,inhand, or in world.
+/datum/element/item_scaling/proc/scale_by_loc(atom/scale)
+	if(isturf(scale.loc))
+		scale_overworld(scale)
+	else
+		scale_storage(scale)
+
 /**
- * Signal handler for COMSIG_ITEM_DROPPED or COMSIG_ATOM_EXITED
+ * Shrinks when inworld
  *
  * Longer detailed paragraph about the proc
  * including any relevant detail
@@ -95,7 +95,7 @@
 	scale(source, overworld_scaling)
 
 /**
- * Signal handler for COMSIG_ITEM_EQUIPPED or COMSIG_ATOM_ENTERED.
+ * Enlarges when inhand or in storage.
  *
  * Longer detailed paragraph about the proc
  * including any relevant detail