fix(player): 评论面板保持高度并两段式收起

test/comment/drama_comments_sheet_test.dart

@@ -307,12 +307,14 @@ void main() {
 
     final sheet = find.byKey(const Key('player-comments-sheet'));
     final list = find.byKey(const Key('comment-list'));
+    final heightBeforeKeyboard = tester.getSize(sheet).height;
     tester.view.viewInsets = const FakeViewPadding(bottom: 180);
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 200));
 
     expect(sheet, findsOneWidget);
     expect(list, findsOneWidget);
+    expect(tester.getSize(sheet).height, closeTo(heightBeforeKeyboard, 0.1));
     expect(find.byKey(const Key('comment-count-label')), findsOneWidget);
     final field = tester.widget<TextField>(
       find.byKey(const Key('comment-input')),
@@ -378,6 +380,7 @@ void main() {
     );
     expect(collapsedField.maxLines, 1);
     expect(tester.getSize(find.byKey(const Key('comment-input'))).height, 44);
+    expect(tester.getSize(sheet).height, closeTo(heightBeforeKeyboard, 0.1));
     expect(tester.getSize(sheet).height, lessThan(520));
     final editableAfterKeyboard = tester.state<EditableTextState>(
       find.descendant(
@@ -402,6 +405,52 @@ void main() {
     );
   });
 
+  testWidgets('should_dismiss_from_outside_in_two_steps', (tester) async {
+    tester.view.physicalSize = const Size(390, 844);
+    tester.view.devicePixelRatio = 1;
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+    addTearDown(tester.view.resetViewInsets);
+    final repository = FakeCommentRepository(
+      pages: [
+        CommentPage(
+          comments: [commentFixture(id: '10', content: 'A comment')],
+        ),
+      ],
+    );
+
+    await _pumpSheet(tester, repository: repository);
+    final sheet = find.byKey(const Key('player-comments-sheet'));
+    final input = find.byKey(const Key('comment-input'));
+    expect(
+      find.byKey(const Key('player-comments-dismiss-layer')),
+      findsOneWidget,
+    );
+
+    tester.view.viewInsets = const FakeViewPadding(bottom: 180);
+    await tester.tap(input);
+    await tester.pumpAndSettle();
+    expect(sheet, findsOneWidget);
+    expect(tester.widget<TextField>(input).focusNode?.hasFocus, isTrue);
+
+    await tester.tap(find.byKey(const Key('comment-list')));
+    await tester.pump();
+    expect(sheet, findsOneWidget);
+
+    await tester.tapAt(const Offset(20, 20));
+    await tester.pump();
+    expect(sheet, findsOneWidget);
+    expect(tester.widget<TextField>(input).focusNode?.hasFocus, isFalse);
+
+    tester.view.viewInsets = const FakeViewPadding();
+    await tester.pumpAndSettle();
+    expect(sheet, findsOneWidget);
+
+    await tester.tapAt(const Offset(20, 20));
+    await tester.pumpAndSettle();
+    expect(sheet, findsNothing);
+  });
+
   testWidgets('should_use_polished_comment_sizes', (tester) async {
     final repository = FakeCommentRepository(
       pages: [