fix(home): 调整榜单版式并去掉二级分类

test/discover/theater_pages_test.dart

@@ -113,8 +113,10 @@ void main() {
     final top3 = tester.getRect(find.byKey(const Key('ranking-cover-3')));
     expect(top1.width, greaterThan(top2.width));
     expect(top3.width, closeTo(top2.width, 0.5));
-    expect(top2.left, closeTo(14, 0.5));
-    expect(top3.right, closeTo(376, 0.5));
+    expect(top2.left, closeTo(8, 0.5));
+    expect(top3.right, closeTo(382, 0.5));
+    expect(top1.left - top2.right, lessThanOrEqualTo(10));
+    expect(top2.width, greaterThan(100));
     expect(top2.left, lessThan(top1.left));
     expect(top3.left, greaterThan(top1.right));
     expect(top1.bottom, closeTo(top2.bottom - 12, 0.5));