feat(flutter): 去掉剧场封面角标并重做创作页

test/discover/home_all_dramas_grid_test.dart

@@ -47,6 +47,7 @@ void main() {
       find.byKey(const Key('drama-tag-chip-city-lights-demo-0')),
       findsOneWidget,
     );
+    expect(find.byKey(const Key('drama-tag-city-lights-demo')), findsNothing);
     expect(tester.takeException(), isNull);
   });