ISTWCMS-3830 Removing empty line, and moving form attachment.

src/Plugin/Block/ContentManagementMenuBlock.php

@@ -150,12 +150,11 @@ class ContentManagementMenuBlock extends BlockBase implements ContainerFactoryPl
    * {@inheritDoc}
    */
   public function blockForm($form, FormStateInterface $form_state) {
+    $form['#attached']['library'][] = 'uw_dashboard/uw-styles';
     // Use configuration if exists, otherwise select all available. Using
     // serialize because dot is not supported as array key, exception will be
     // thrown from ConfigBase.php:211.
     $selected_menus = unserialize($this->configuration['selected_menus']);
-    $form['#attached']['library'][] = 'uw_dashboard/uw-styles';
-
 
     // Get all content menu items, load them.
     $menu_first_level = $this->getContentMenuItems();