feat(flutter): 重构播放页并增加语言切换

test/watch/watch_history_provider_test.dart

@@ -42,9 +42,7 @@ void main() {
     await tester.pumpAndSettle();
     await tester.tap(find.byKey(const Key('tab-mine')));
     await tester.pumpAndSettle();
-    await tester.drag(find.byType(ListView), const Offset(0, -520));
-    await tester.pumpAndSettle();
-    await tester.tap(find.text('Watch History'));
+    await tester.tap(find.byKey(const Key('mine-history')));
     await tester.pumpAndSettle();
 
     expect(tester.takeException(), isNull);