fix(home): 收紧短剧卡片间距

lib/pages/recommend/widgets/recommend_sections_view.dart

@@ -196,7 +196,7 @@ class RecommendSectionsView extends StatelessWidget {
             ),
             itemCount: dramas.length,
             separatorBuilder: (_, _) =>
-                const SizedBox(width: AppDimens.spaceMd),
+                const SizedBox(width: AppDimens.homeGridGap),
             itemBuilder: (context, index) => RecommendSectionCard(
               sectionKey: key,
               drama: dramas[index],