feat(gui): 新增顶部栏预制体并优化UI布局与复用

新增通用顶部栏UI预制体top.prefab及其配置文件，调整天赋项预制体的内容宽度，在角色控制器和天赋面板中复用该预制体以减少重复代码，同时优化天赋面板的布局与组件配置。

assets/resources/gui/element/prefab_talent_item.prefab

@@ -211,7 +211,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 200,
       "height": 230
     },
     "_anchorPoint": {
@@ -333,7 +333,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 200,
       "height": 230
     },
     "_anchorPoint": {
@@ -574,7 +574,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 150,
+      "width": 170,
       "height": 140
     },
     "_anchorPoint": {
@@ -971,7 +971,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 150,
+      "width": 170,
       "height": 140
     },
     "_anchorPoint": {
@@ -2961,7 +2961,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 200,
       "height": 230
     },
     "_anchorPoint": {

assets/resources/gui/element/top.prefab.meta

@@ -0,0 +1,13 @@
+{
+  "ver": "1.1.50",
+  "importer": "prefab",
+  "imported": true,
+  "uuid": "56aee962-4a5e-45ae-a779-999444d06d18",
+  "files": [
+    ".json"
+  ],
+  "subMetas": {},
+  "userData": {
+    "syncNodeName": "top"
+  }
+}