Prefab cache fix (#434)

* fix prefab cache

* fix prefab cache

Author: Artauthr

runtimes/talos/src/main/java/com/talosvfx/talos/runtime/scene/Prefab.java

@@ -4,14 +4,13 @@
 import com.badlogic.gdx.utils.Json;
 import com.badlogic.gdx.utils.JsonReader;
 import com.badlogic.gdx.utils.JsonValue;
-import com.talosvfx.talos.runtime.utils.TempHackUtil;
 
 public class Prefab extends SavableContainer {
     public static String PREFIX = "Prefab_";
 
     public transient String name;
     private transient String talosIdentifier;
-    public transient String cachedJsonString;
+    public transient String cachedRootGoJson;
 
     public Prefab () {
     }
@@ -21,14 +20,6 @@ public Prefab (String jsonContent, String name) {
         setName(name);
     }
 
-    @Override
-    void loadFromString (String jsonString) {
-        String hackedString = TempHackUtil.hackIt(jsonString);
-        this.cachedJsonString = hackedString;
-
-        load(hackedString);
-    }
-
     public Prefab(GameObject root) {
         this.root = root;
     }
@@ -48,7 +39,7 @@ public void load(String data) {
         root = json.readValue(GameObject.class, jsonRoot);
         root.setGameObjectContainer(this);
 
-        //Lets add a fake root
+        cachedRootGoJson = json.toJson(root, GameObject.class);
     }
 
     @Override