Revert changes in #9332 and instead enqueue assets in correct place d…

…epending on admin vs frontend

src/Assets/AssetDataRegistry.php

@@ -66,23 +66,8 @@ public function __construct( Api $asset_api ) {
 	 * Hook into WP asset registration for enqueueing asset data.
 	 */
 	protected function init() {
-		if ( $this->is_site_editor() ) {
-			add_action( 'enqueue_block_editor_assets', array( $this, 'register_data_script' ) );
-		} else {
-			add_action( 'init', array( $this, 'register_data_script' ) );
-		}
-		add_action( 'wp_print_footer_scripts', array( $this, 'enqueue_asset_data' ), 2 );
-		add_action( 'admin_print_footer_scripts', array( $this, 'enqueue_asset_data' ), 2 );
-	}
-
-	/**
-	 * Checks if the current URL is the Site Editor.
-	 *
-	 * @return boolean
-	 */
-	protected function is_site_editor() {
-		$url_path = isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '';
-		return str_contains( $url_path, 'site-editor.php' );
+		add_action( 'init', array( $this, 'register_data_script' ) );
+		add_action( is_admin() ? 'admin_print_footer_scripts' : 'wp_print_footer_scripts', array( $this, 'enqueue_asset_data' ), 2 );
 	}
 
 	/**