fix(aiot): 恢复实时视频菜单项并设置隐藏

恢复被误删的实时视频菜单定义，通过 visible=False 隐藏菜单，
保留路由和组件以备后续启用。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/routers/yudao_auth.py

@@ -328,6 +328,18 @@ def _build_aiot_menus():
                     "visible": True,
                     "keepAlive": True,
                 },
+                {
+                    "id": 2030,
+                    "parentId": 2000,
+                    "name": "实时视频",
+                    "path": "video/live",
+                    "component": "aiot/video/live/index",
+                    "componentName": "AiotVideoLive",
+                    "icon": "ep:video-camera",
+                    "sort": 5,
+                    "visible": False,
+                    "keepAlive": True,
+                },
                 {
                     "id": 2040,
                     "parentId": 2000,