fix(frontend): align search and header components with reference

inc/helpers/aksrt-ajax-list.php

@@ -11,12 +11,12 @@ if (!function_exists('aksrt_get_ajax_null')) {
 	/**
 	 * Empty state for AJAX list replace.
 	 */
-	function aksrt_get_ajax_null(?string $text = null, $margin = 60, string $img = 'null.svg'): string {
+	function aksrt_get_ajax_null(?string $text = null, $margin = 60, string $img = 'null.svg', int $width = 280): string {
 		if (null === $text) {
 			$text = __('内容空空如也', 'aksrt');
 		}
 		if (function_exists('aksrt_get_null')) {
-			return aksrt_get_null($text, $margin, $img, 'ajax-item aksrt-ajax-null');
+			return aksrt_get_null($text, $margin, $img, 'ajax-item aksrt-ajax-null', $width);
 		}
 		return '<div class="text-center ajax-item aksrt-ajax-null" style="padding:' . esc_attr((string) $margin) . 'px 0;">'
 			. '<p class="muted-3-color">' . esc_html((string) $text) . '</p></div>';