fix: 客户菜单添加仪表盘入口, 修复已登录用户右侧内容不加载问题

1. global_menu.ui: 客户菜单首位添加dashboard菜单项
2. index.ui: sage_main_content默认子组件改为urlwidget直接加载dashboard,
   解决已登录用户页面加载时user_logined事件不触发导致内容区空白的问题

wwwroot/global_menu.ui

@@ -11,6 +11,13 @@
         "items": [
 {% if is_customer %}
             {
+                "name": "dashboard",
+                "label": "仪表盘",
+                "icon": "{{entire_url('/imgs/dashboard.svg')}}",
+                "url": "{{entire_url('/dashboard_for_sage/index.ui')}}",
+                "target": "app.sage_main_content"
+            }
+            ,{
                 "name": "model_plaza",
                 "label": "模型广场",
                 "icon": "{{entire_url('/imgs/cubes.svg')}}",

wwwroot/index.ui

@@ -170,11 +170,9 @@
                     ],
                     "subwidgets": [
                         {
-                            "widgettype": "Text",
+                            "widgettype": "urlwidget",
                             "options": {
-                                "css": "sage-text-secondary",
+                                "url": "{{entire_url('/dashboard_for_sage/index.ui')}}"
-                                "text": "加载中...",
-                                "fontSize": "16px"
                             }
                         }
                     ]