feat(flutter): 剧场搜索框改白底并新增榜单新剧预约页

test/discover/home_all_dramas_grid_test.dart

@@ -183,7 +183,7 @@ void main() {
             as BoxDecoration;
 
     expect(shell().borderRadius, BorderRadius.circular(22));
-    expect(shell().color, AppColors.commentInput);
+    expect(shell().color, AppColors.card);
     expect((shell().border! as Border).top.color, Colors.transparent);
     expect(
       tester.getSize(find.byKey(const Key('discover-search-shell'))).height,