Adjust API disconnection text to be usable in more scenarios

osu.Game/Localisation/NotificationsStrings.cs

@@ -146,9 +146,9 @@ Click to see what's new!", version);
         public static LocalisableString FriendOffline(string info) => new TranslatableString(getKey(@"friend_offline"), @"Offline: {0}", info);
 
         /// <summary>
-        /// "Connection to API was lost. Can't continue with online play."
+        /// "Connection to online services was interrupted. osu! will be operating with limited functionality."
         /// </summary>
-        public static LocalisableString APIDisconnect => new TranslatableString(getKey(@"api_disconnect"), @"Connection to API was lost. Can't continue with online play.");
+        public static LocalisableString APIConnectionInterrupted => new TranslatableString(getKey(@"api_connection_interrupted"), @"Connection to online services was interrupted. osu! will be operating with limited functionality.");
 
         /// <summary>
         /// "Connection to the multiplayer server was lost. Exiting multiplayer."

osu.Game/Online/OnlineStatusNotifier.cs

@@ -89,7 +89,7 @@ namespace osu.Game.Online
                     notificationOverlay?.Post(new SimpleErrorNotification
                     {
                         Icon = FontAwesome.Solid.ExclamationCircle,
-                        Text = NotificationsStrings.APIDisconnect,
+                        Text = NotificationsStrings.APIConnectionInterrupted,
                     });
                 }
             });