refactor(header): unify top icon-cards on single zib-widget path

src/Settings/DisplayPageGroups.php

@@ -132,7 +132,6 @@ trait DisplayPageGroups {
 	/** @return array<string,mixed> */
 	private static function header_slider_card_defaults(): array {
 		return [
-			'show_widget_bg' => false,
 			'icon_radius4' => false,
 			'cards' => [
 				['icon' => 'zibsvg-vip_1', 'customize_icon' => '', 'icon_class' => 'c-yellow', 'link' => [], 'title' => '图标卡片', 'desc' => '这是一个图标卡片示例'],