fix: notification features are not set in case of form validation errors

reason: if result.hasErrors(), we use setTags(..) method to set some basic attributes.
it was missing there.

Author: goekay

src/main/java/de/rwth/idsg/steve/web/controller/UsersController.java

@@ -93,7 +93,6 @@ public String getDetails(@PathVariable("userPk") int userPk, Model model) {
         UserForm form = UserFormMapper.toForm(details);
 
         model.addAttribute("userForm", form);
-        model.addAttribute("features", NotificationFeature.getUserValues());
         setTags(model, form.getIdTagList());
         return "data-man/userDetails";
     }
@@ -102,7 +101,6 @@ public String getDetails(@PathVariable("userPk") int userPk, Model model) {
     public String addGet(Model model) {
         setTags(model, List.of());
         model.addAttribute("userForm", new UserForm());
-        model.addAttribute("features", NotificationFeature.getUserValues());
         return "data-man/userAdd";
     }
 
@@ -146,6 +144,7 @@ private void setTags(Model model, List<String> idTagsFromUser) {
 
         model.addAttribute("countryCodes", ControllerHelper.COUNTRY_DROPDOWN);
         model.addAttribute("idTagList", idTagList);
+        model.addAttribute("features", NotificationFeature.getUserValues());
     }
 
     // -------------------------------------------------------------------------