fix(discover): 点击页面取消搜索焦点

lib/pages/discover/discover_view.dart

@@ -302,6 +302,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
           controller: logic.search,
           focusNode: logic.searchFocus,
           onChanged: (_) => logic.onSearchChanged(),
+          onTapOutside: (_) => logic.searchFocus.unfocus(),
           textInputAction: TextInputAction.search,
           style: const TextStyle(color: AppColors.onSurface, fontSize: 13),
           decoration: InputDecoration(