fix(player): 修正评论面板键盘态布局重叠

test/comment/drama_comments_sheet_test.dart

@@ -222,6 +222,7 @@ void main() {
   testWidgets('should_clear_and_keep_input_focused_after_successful_post', (
     tester,
   ) async {
+    addTearDown(tester.view.resetViewInsets);
     final repository = FakeCommentRepository(
       pages: [const CommentPage()],
       publishResult: commentFixture(id: '11', content: 'Nice demo', mine: true),
@@ -230,8 +231,9 @@ void main() {
 
     await _pumpSheet(tester, repository: repository);
     final input = find.byKey(const Key('comment-input'));
+    tester.view.viewInsets = const FakeViewPadding(bottom: 180);
     await tester.tap(input);
-    await tester.pump();
+    await tester.pumpAndSettle();
     expect(tester.widget<TextField>(input).focusNode?.hasFocus, isTrue);
     await tester.enterText(input, 'Nice demo');
     await tester.pump();
@@ -258,7 +260,7 @@ void main() {
     expect(repository.countCalls, ['5', '5']);
   });
 
-  testWidgets('should_expand_composer_only_while_input_is_focused', (
+  testWidgets('should_keep_composer_separate_when_keyboard_opens', (
     tester,
   ) async {
     tester.view.physicalSize = const Size(390, 844);
@@ -290,6 +292,11 @@ void main() {
     expect(find.byKey(const Key('comment-count-label')), findsOneWidget);
     expect(find.byKey(const Key('comment-composer')), findsOneWidget);
     expect(find.byKey(const Key('comment-input-surface')), findsOneWidget);
+    expect(
+      tester.widget<TextField>(find.byKey(const Key('comment-input'))).maxLines,
+      1,
+    );
+    expect(tester.getSize(find.byKey(const Key('comment-input'))).height, 44);
     final editableAfter = tester.state<EditableTextState>(
       find.descendant(
         of: find.byKey(const Key('comment-input')),
@@ -297,6 +304,16 @@ void main() {
       ),
     );
     expect(identical(editableBefore, editableAfter), isTrue);
+
+    final sheet = find.byKey(const Key('player-comments-sheet'));
+    final list = find.byKey(const Key('comment-list'));
+    tester.view.viewInsets = const FakeViewPadding(bottom: 180);
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 200));
+
+    expect(sheet, findsOneWidget);
+    expect(list, findsOneWidget);
+    expect(find.byKey(const Key('comment-count-label')), findsOneWidget);
     final field = tester.widget<TextField>(
       find.byKey(const Key('comment-input')),
     );
@@ -310,6 +327,10 @@ void main() {
       isNull,
     );
     expect(tester.getSize(find.byKey(const Key('comment-post'))).height, 32);
+    final listRect = tester.getRect(list);
+    final inputRect = tester.getRect(find.byKey(const Key('comment-input')));
+    expect(listRect.overlaps(inputRect), isFalse);
+    expect(listRect.bottom, lessThanOrEqualTo(inputRect.top));
     expect(find.byIcon(Icons.image_outlined), findsNothing);
     expect(find.byIcon(Icons.emoji_emotions_outlined), findsNothing);
     expect(find.byIcon(Icons.alternate_email_rounded), findsNothing);
@@ -323,16 +344,6 @@ void main() {
       isNotNull,
     );
 
-    final sheet = find.byKey(const Key('player-comments-sheet'));
-    final list = find.byKey(const Key('comment-list'));
-    final sheetTop = tester.getTopLeft(sheet).dy;
-    final listTop = tester.getTopLeft(list).dy;
-    tester.view.viewInsets = const FakeViewPadding(bottom: 180);
-    await tester.pump();
-    await tester.pump(const Duration(milliseconds: 200));
-    expect(sheet, findsOneWidget);
-    expect(list, findsOneWidget);
-    expect(find.byKey(const Key('comment-count-label')), findsOneWidget);
     final editableDuringKeyboard = tester.state<EditableTextState>(
       find.descendant(
         of: find.byKey(const Key('comment-input')),
@@ -340,8 +351,7 @@ void main() {
       ),
     );
     expect(identical(editableAfter, editableDuringKeyboard), isTrue);
-    expect(tester.getTopLeft(sheet).dy, closeTo(sheetTop, 0.1));
-    expect(tester.getTopLeft(list).dy, closeTo(listTop, 0.1));
+    expect(tester.getBottomLeft(sheet).dy, closeTo(844 - 180, 0.1));
     expect(
       tester.widget<ListView>(list).padding?.resolve(TextDirection.ltr).bottom,
       greaterThanOrEqualTo(180 + 44),
@@ -363,6 +373,12 @@ void main() {
     expect(list, findsOneWidget);
     expect(find.byKey(const Key('comment-count-label')), findsOneWidget);
     expect(find.byKey(const Key('comment-composer')), findsOneWidget);
+    final collapsedField = tester.widget<TextField>(
+      find.byKey(const Key('comment-input')),
+    );
+    expect(collapsedField.maxLines, 1);
+    expect(tester.getSize(find.byKey(const Key('comment-input'))).height, 44);
+    expect(tester.getSize(sheet).height, lessThan(520));
     final editableAfterKeyboard = tester.state<EditableTextState>(
       find.descendant(
         of: find.byKey(const Key('comment-input')),
@@ -370,8 +386,6 @@ void main() {
       ),
     );
     expect(identical(editableAfter, editableAfterKeyboard), isTrue);
-    expect(tester.getTopLeft(sheet).dy, closeTo(sheetTop, 0.1));
-    expect(tester.getTopLeft(list).dy, closeTo(listTop, 0.1));
     expect(
       tester
           .widget<TextField>(find.byKey(const Key('comment-input')))