feat(dashboard): enhance widget availability and initialization

- Updated `getAvailableWidgets` method in `DashboardService` to merge default widget types with database entries, ensuring immediate visibility of new widgets post-deployment.
- Introduced `DASHBOARD_WIDGET_TYPE_DEFAULTS` in `initializeWidgetTypes` for canonical widget types, facilitating API merging when database entries are absent.
- Modified `StatusBar.vue` to utilize a computed property for quick access children, improving menu item handling and visibility based on user context.
- Enhanced `LoggedInView.vue` to dynamically return localized widget labels, improving user experience with accurate translations.

frontend/src/views/home/LoggedInView.vue

@@ -186,15 +186,18 @@ export default {
   },
   methods: {
     getLocalizedWidgetLabel(endpoint, fallbackLabel = '') {
+      const ep = String(endpoint || '');
+      if (ep.startsWith('/api/news')) {
+        return this.$t('home.dashboard.widgetLabels.news');
+      }
       const key = {
         '/api/termine': 'home.dashboard.widgetLabels.appointments',
         '/api/falukant/dashboard-widget': 'home.dashboard.widgetLabels.falukant',
-        '/api/news': 'home.dashboard.widgetLabels.news',
         '/api/calendar/widget/birthdays': 'home.dashboard.widgetLabels.birthdays',
         '/api/calendar/widget/upcoming': 'home.dashboard.widgetLabels.upcoming',
         '/api/calendar/widget/mini': 'home.dashboard.widgetLabels.calendar',
         '/api/vocab/dashboard-widget': 'home.dashboard.widgetLabels.vocabCourses'
-      }[endpoint];
+      }[ep];
       return key ? this.$t(key) : fallbackLabel;
     },
     normalizeWidgetType(widgetType) {