fix(client/user-notifications): load last page

hasMoreItems has to be called before bumping the current page in order
to work accordingly.

client/src/app/shared/standalone-notifications/user-notifications.component.ts

@@ -80,9 +80,8 @@ export class UserNotificationsComponent implements OnInit {
   onNearOfBottom () {
     if (this.infiniteScroll === false) return
 
-    this.componentPagination.currentPage++
-
     if (hasMoreItems(this.componentPagination)) {
+      this.componentPagination.currentPage++
       this.loadNotifications()
     }
   }