fix(ui): 调整加载界面和UI元素的边框与位置

- 修正loading界面背景图位置偏移问题
- 为aui和ui3图集中的多个元素添加九宫格边框设置
- 更新loading界面精灵帧引用

assets/resources/gui/aui.plist.meta

@@ -2600,10 +2600,10 @@
         "height": 63,
         "rawWidth": 250,
         "rawHeight": 63,
-        "borderTop": 0,
-        "borderBottom": 0,
-        "borderLeft": 0,
-        "borderRight": 0,
+        "borderTop": 22,
+        "borderBottom": 21,
+        "borderLeft": 65,
+        "borderRight": 33,
         "packable": true,
         "pixelsToUnit": 100,
         "pivotX": 0.5,

assets/resources/gui/ui3.plist.meta

@@ -4624,10 +4624,10 @@
         "height": 58,
         "rawWidth": 56,
         "rawHeight": 58,
-        "borderTop": 0,
-        "borderBottom": 0,
-        "borderLeft": 0,
-        "borderRight": 0,
+        "borderTop": 24,
+        "borderBottom": 27,
+        "borderLeft": 25,
+        "borderRight": 24,
         "packable": true,
         "pixelsToUnit": 100,
         "pivotX": 0.5,
@@ -4716,10 +4716,10 @@
         "height": 58,
         "rawWidth": 56,
         "rawHeight": 58,
-        "borderTop": 0,
-        "borderBottom": 0,
-        "borderLeft": 0,
-        "borderRight": 0,
+        "borderTop": 26,
+        "borderBottom": 26,
+        "borderLeft": 26,
+        "borderRight": 26,
         "packable": true,
         "pixelsToUnit": 100,
         "pivotX": 0.5,
@@ -4762,10 +4762,10 @@
         "height": 58,
         "rawWidth": 56,
         "rawHeight": 58,
-        "borderTop": 0,
-        "borderBottom": 0,
-        "borderLeft": 0,
-        "borderRight": 0,
+        "borderTop": 26,
+        "borderBottom": 26,
+        "borderLeft": 26,
+        "borderRight": 26,
         "packable": true,
         "pixelsToUnit": 100,
         "pivotX": 0.5,

assets/resources/loading/prefab/loading.prefab

@@ -99,7 +99,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 0,
-      "y": -184.565,
+      "y": 0.2,
       "z": 0
     },
     "_lrot": {
@@ -176,7 +176,7 @@
       "a": 255
     },
     "_spriteFrame": {
-      "__uuid__": "d7d869bc-06aa-4876-806f-487e68b96780@40168",
+      "__uuid__": "d7d869bc-06aa-4876-806f-487e68b96780@1e2d6",
       "__expectedType__": "cc.SpriteFrame"
     },
     "_type": 1,