Show a minus for a user's state if the state cannot be determined

refs #8826

application/views/scripts/user/show.phtml

@@ -28,7 +28,7 @@ if ($this->hasPermission('config/application/users/edit') && $backend instanceof
  <?php endif ?>
   <div class="user-header">
     <p class="user-name"><strong><?= $this->escape($user->user_name); ?></strong></p> <?= $editLink; ?>
-    <p class="user-state"><strong><?= $this->translate('State'); ?>:</strong> <?= $user->is_active ? $this->translate('Active') : $this->translate('Inactive'); ?></p>
+    <p class="user-state"><strong><?= $this->translate('State'); ?>:</strong> <?= $user->is_active === null ? '-' : ($user->is_active ? $this->translate('Active') : $this->translate('Inactive')); ?></p>
     <p class="user-created"><strong><?= $this->translate('Created at'); ?>:</strong> <?= $user->created_at === null ? '-' : $this->formatDateTime($user->created_at); ?></p>
     <p class="user-modified"><strong><?= $this->translate('Last modified'); ?>:</strong> <?= $user->last_modified === null ? '-' : $this->formatDateTime($user->last_modified); ?></p>
   </div>