Alerting: change Settings page subtitle (#98368)

* Alerting: change Settings page subtitle

* update pseudo-locale

* fix pseudo-locale translation using `make i18n-extract`

public/app/core/utils/navBarItem-translations.ts

@@ -234,7 +234,10 @@ export function getNavSubTitle(navId: string | undefined) {
         'Upgrade your existing legacy alerts and notification channels to the new Grafana Alerting'
       );
     case 'alerting-admin':
-      return t('nav.alerting-admin.subtitle', 'Manage Alertmanager configurations');
+      return t(
+        'nav.alerting-admin.subtitle',
+        'Manage Alertmanager configurations and enable receiving Grafana-managed alerts'
+      );
     case 'alert-list':
       return t('nav.alerting-list.subtitle', 'Rules that determine whether an alert will fire');
     case 'receivers':

public/locales/en-US/grafana.json

@@ -2031,7 +2031,7 @@
       "title": "Alerting"
     },
     "alerting-admin": {
-      "subtitle": "Manage Alertmanager configurations",
+      "subtitle": "Manage Alertmanager configurations and enable receiving Grafana-managed alerts",
       "title": "Settings"
     },
     "alerting-am-routes": {

public/locales/pseudo-LOCALE/grafana.json

@@ -2031,7 +2031,7 @@
       "title": "Åľęřŧįʼnģ"
     },
     "alerting-admin": {
-      "subtitle": "Mäʼnäģę Åľęřŧmäʼnäģęř čőʼnƒįģūřäŧįőʼnş",
+      "subtitle": "Mäʼnäģę Åľęřŧmäʼnäģęř čőʼnƒįģūřäŧįőʼnş äʼnđ ęʼnäþľę řęčęįvįʼnģ Ğřäƒäʼnä-mäʼnäģęđ äľęřŧş",
       "title": "Ŝęŧŧįʼnģş"
     },
     "alerting-am-routes": {