feature (user service): Add a validation check after the user record is created in the sqlstore. (#59968)

Add a validation check after the user record is created in the sqlstore.

pkg/services/user/userimpl/store.go

@@ -78,6 +78,12 @@ func (ss *sqlStore) Insert(ctx context.Context, cmd *user.User) (int64, error) {
 	if err != nil {
 		return 0, err
 	}
+
+	// verify that user was created and cmd.ID was updated with the actual new userID
+	_, err = ss.getAnyUserType(ctx, cmd.ID)
+	if err != nil {
+		return 0, err
+	}
 	return cmd.ID, nil
 }
 
@@ -683,3 +689,19 @@ func (ss *sqlStore) Search(ctx context.Context, query *user.SearchUsersQuery) (*
 	})
 	return &result, err
 }
+
+// getAnyUserType searches for a user record by ID. The user account may be a service account.
+func (ss *sqlStore) getAnyUserType(ctx context.Context, userID int64) (*user.User, error) {
+	usr := user.User{ID: userID}
+	err := ss.db.WithDbSession(ctx, func(sess *db.Session) error {
+		has, err := sess.Get(&usr)
+		if err != nil {
+			return err
+		}
+		if !has {
+			return user.ErrUserNotFound
+		}
+		return nil
+	})
+	return &usr, err
+}