refactor(hero): 统一角色状态初始化逻辑并调整UI布局

1. 将HeroSpine和HeroViewComp的默认状态从"idle"改为空字符串
2. 替换HeroViewComp中直接调用as.idle()为status_change方法
3. 调整role_controller预制体的UI元素位置和尺寸，适配240宽度布局

assets/resources/gui/role_controller.prefab

@@ -1386,7 +1386,7 @@
     },
     "_lpos": {
       "__type__": "cc.Vec3",
-      "x": -180,
+      "x": -240,
       "y": 0,
       "z": 0
     },
@@ -1785,7 +1785,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 240,
       "height": 110
     },
     "_anchorPoint": {
@@ -2387,7 +2387,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 240,
       "height": 110
     },
     "_anchorPoint": {
@@ -2910,7 +2910,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 240,
       "height": 110
     },
     "_anchorPoint": {
@@ -3509,7 +3509,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 240,
       "height": 110
     },
     "_anchorPoint": {
@@ -4764,7 +4764,7 @@
     },
     "_lpos": {
       "__type__": "cc.Vec3",
-      "x": 180,
+      "x": 240,
       "y": 0,
       "z": 0
     },
@@ -5163,7 +5163,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 240,
       "height": 110
     },
     "_anchorPoint": {
@@ -5765,7 +5765,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 180,
+      "width": 240,
       "height": 110
     },
     "_anchorPoint": {
@@ -9317,7 +9317,7 @@
     },
     "_contentSize": {
       "__type__": "cc.Size",
-      "width": 540,
+      "width": 720,
       "height": 200
     },
     "_anchorPoint": {
@@ -9345,8 +9345,8 @@
     },
     "_alignFlags": 44,
     "_target": null,
-    "_left": 90,
-    "_right": 90,
+    "_left": 0,
+    "_right": 0,
     "_top": 0,
     "_bottom": -2,
     "_horizontalCenter": 0,