perf: 优化关卡布局

assets/prefabs/PageLevel.prefab

@@ -9493,7 +9493,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": -796.795,
+      "y": -821.62,
       "z": 0
     },
     "_lrot": {
@@ -9565,7 +9565,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": 76.05099999999993,
+      "y": 97.33,
       "z": 0
     },
     "_lrot": {
@@ -9577,9 +9577,9 @@
     },
     "_lscale": {
       "__type__": "cc.Vec3",
-      "x": 0.594,
-      "y": 0.594,
-      "z": 0.594
+      "x": 0.738,
+      "y": 0.738,
+      "z": 0.738
     },
     "_mobility": 0,
     "_layer": 1073741824,
@@ -11345,7 +11345,7 @@
     "_left": 0,
     "_right": 0,
     "_top": 0,
-    "_bottom": 0,
+    "_bottom": 89.15099999999993,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,
     "_isAbsLeft": true,
@@ -12422,7 +12422,7 @@
     "_left": 0,
     "_right": 0,
     "_top": 0,
-    "_bottom": 233.20500000000004,
+    "_bottom": 208.38,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,
     "_isAbsLeft": true,