fix: bad selection logic

Previously there was a bug where the material was always applied to the first game-object in the hierarchy, instead of the hovered one. Now this is fixed.

Code/ApplyMaterialToAll.cs

@@ -22,10 +22,14 @@ public static class ApplyMaterialToAll
         private static void OnHierarchyGUI(int instanceID, Rect selectionRect)
         {
             var currentEvent = Event.current;
-
+            
             // Must hold alt
             if (!currentEvent.alt) return;
 
+            // Must be hovering selection rect
+            if (!selectionRect.Contains(currentEvent.mousePosition)) return;
+
+
             // Must only drag single material
             if (TryGetDraggedMaterial() is not { } material) return;