Fixed fireball rollback sync.

frontend/assets/resources/prefabs/Fireball.prefab

@@ -24,11 +24,11 @@
     "_active": true,
     "_components": [
       {
-        "__id__": 7
+        "__id__": 8
       }
     ],
     "_prefab": {
-      "__id__": 8
+      "__id__": 9
     },
     "_opacity": 255,
     "_color": {
@@ -92,7 +92,7 @@
     "_active": true,
     "_components": [],
     "_prefab": {
-      "__id__": 6
+      "__id__": 7
     },
     "_opacity": 255,
     "_color": {
@@ -149,14 +149,17 @@
       "__id__": 2
     },
     "_children": [],
-    "_active": true,
+    "_active": false,
     "_components": [
       {
         "__id__": 4
+      },
+      {
+        "__id__": 5
       }
     ],
     "_prefab": {
-      "__id__": 5
+      "__id__": 6
     },
     "_opacity": 255,
     "_color": {
@@ -220,9 +223,7 @@
     ],
     "_srcBlendFactor": 770,
     "_dstBlendFactor": 771,
-    "_spriteFrame": {
-      "__uuid__": "e92702d5-d5fd-49e6-ab6b-2296b43fa6d6"
-    },
+    "_spriteFrame": null,
     "_type": 0,
     "_sizeMode": 1,
     "_fillType": 0,
@@ -239,6 +240,25 @@
     },
     "_id": ""
   },
+  {
+    "__type__": "cc.Animation",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 3
+    },
+    "_enabled": true,
+    "_defaultClip": {
+      "__uuid__": "ba12416b-eec3-4260-8402-7fc25b125624"
+    },
+    "_clips": [
+      {
+        "__uuid__": "ba12416b-eec3-4260-8402-7fc25b125624"
+      }
+    ],
+    "playOnLoad": false,
+    "_id": ""
+  },
   {
     "__type__": "cc.PrefabInfo",
     "root": {