fix(ui): 打磨推荐追剧我的设置页间距与图标

lib/pages/discover/search_page.dart

@@ -139,7 +139,7 @@ class _SearchPageState extends State<SearchPage> {
             color: AppColors.textSecondary,
             size: 18,
           ),
-          const SizedBox(width: AppDimens.spaceSm),
+          const SizedBox(width: 2),
           Expanded(
             child: TextField(
               key: const Key('discover-search'),