fix: unable to save modification of firstname or lastname - EXO-74782

Before this fix, when user update firstname or lastname in profile, the modification is not saved.
This is because in the the profile is uncessessary reloaded from databse before saving the modification

The commit ensures to not reload the profil, and save it correctly.

Resolves Meeds-io/meeds#2490

component/service/src/main/java/org/exoplatform/social/rest/impl/user/UserRest.java

@@ -1146,9 +1146,6 @@ public Response updateUserProfileAttributes(@Context
         if (!(profileProperty.isMultiValued() || !profileProperty.getChildren().isEmpty())) {
           updateProfileField(profile, profileProperty.getPropertyName(), profileProperty.getValue(), false);
           updateProfilePropertyVisibility(profileProperty);
-          if (profileProperty.getPropertyName().equals(Profile.FIRST_NAME) || profileProperty.getPropertyName().equals(Profile.LAST_NAME) ) {
-            profile = getUserIdentity(username).getProfile();
-          }
         } else {
           List<Map<String, String>> maps = new ArrayList<>();
           profileProperty.getChildren().forEach(profilePropertySettingEntity -> {