fix: load newspack ui in iframe editor

Author: chickenn00dle

includes/class-newspack-ui.php

@@ -28,7 +28,7 @@ class Newspack_UI {
 	public static function init() {
 		\add_action( 'wp_enqueue_scripts', [ __CLASS__, 'enqueue_assets' ] );
 		\add_action( 'admin_enqueue_scripts', [ __CLASS__, 'enqueue_assets' ] );
-		\add_action( 'enqueue_block_editor_assets', [ __CLASS__, 'enqueue_assets' ] );
+		\add_action( 'enqueue_block_assets', [ __CLASS__, 'enqueue_assets' ] );
 		\add_filter( 'the_content', [ __CLASS__, 'load_demo' ] );
 		\add_action( 'admin_enqueue_scripts', [ __CLASS__, 'theme_colors_css' ] );
 		// Only run if the site is using a block theme.