fix(ui): 统一播放页右侧操作栏顺序为收藏-点赞-评论-分享

与推荐页操作栏保持一致，同步更新布局断言。

lib/pages/player/widgets/player_overlay.dart

@@ -178,14 +178,6 @@ class PlayerPlaybackOverlay extends StatelessWidget {
                 selected: data.saved,
                 onTap: actions.onSave,
               ),
-              InteractionRailItem(
-                key: const Key('player-rail-comments'),
-                asset: 'assets/icon/rail/rail_comment.png',
-                label: data.l10n.comments,
-                count: data.commentCount,
-                countKey: const Key('player-rail-comments-count'),
-                onTap: actions.onComments,
-              ),
               InteractionRailItem(
                 key: const Key('player-rail-like'),
                 asset: 'assets/icon/rail/rail_like.png',
@@ -196,6 +188,14 @@ class PlayerPlaybackOverlay extends StatelessWidget {
                 selectedColor: AppColors.doubleTapHeartRed,
                 onTap: actions.onLike,
               ),
+              InteractionRailItem(
+                key: const Key('player-rail-comments'),
+                asset: 'assets/icon/rail/rail_comment.png',
+                label: data.l10n.comments,
+                count: data.commentCount,
+                countKey: const Key('player-rail-comments-count'),
+                onTap: actions.onComments,
+              ),
               InteractionRailItem(
                 key: const Key('player-rail-share'),
                 asset: 'assets/icon/rail/rail_share.png',

test/player/player_fullscreen_test.dart

@@ -1359,9 +1359,9 @@ void main() {
     final shareRect = tester.getRect(
       find.byKey(const Key('player-rail-share')),
     );
-    expect(commentsRect.top - saveRect.bottom, closeTo(24, 0.1));
+    expect(likeRect.top - saveRect.bottom, closeTo(24, 0.1));
-    expect(likeRect.top - commentsRect.bottom, closeTo(24, 0.1));
+    expect(commentsRect.top - likeRect.bottom, closeTo(24, 0.1));
-    expect(shareRect.top - likeRect.bottom, closeTo(24, 0.1));
+    expect(shareRect.top - commentsRect.bottom, closeTo(24, 0.1));
 
     final saveButton = tester.widget<IconButton>(
       find.descendant(