fix: 优化追剧页切换与编辑按钮

test/following/following_page_test.dart

@@ -53,6 +53,9 @@ void main() {
     expect(tab.style.fontSize, AppDimens.followingTabFont);
     expect(tab.style.fontWeight, FontWeight.w600);
     expect(tab.style.color, AppColors.textPrimary);
+    final editIcon = tester.widget<Icon>(find.byIcon(Icons.edit_outlined));
+    expect(editIcon.size, AppDimens.followingEditIconSize);
+    expect(editIcon.color, AppColors.textTabInactive);
     final grid = tester.widget<SliverGrid>(
       find.descendant(
         of: find.byKey(const Key('following-favorites-grid')),