fix(flutter): 修复详情与播放器底部闪白

test/theme/app_theme_test.dart

@@ -2,8 +2,10 @@
 
 import 'dart:math';
 
+import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/app.dart';
 import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/core/theme/app_theme.dart';
 
@@ -50,6 +52,25 @@ void main() {
     expect(theme.appBarTheme.systemOverlayStyle, SystemUiOverlayStyle.dark);
   });
 
+  test('should_use_ink_navigation_bar_without_contrast_scrim', () {
+    expect(appSystemOverlayStyle.statusBarColor, Colors.transparent);
+    expect(appSystemOverlayStyle.systemNavigationBarColor, AppColors.ink);
+    expect(
+      appSystemOverlayStyle.systemNavigationBarDividerColor,
+      Colors.transparent,
+    );
+    expect(
+      appSystemOverlayStyle.systemNavigationBarIconBrightness,
+      Brightness.dark,
+    );
+    expect(appSystemOverlayStyle.systemNavigationBarContrastEnforced, isFalse);
+
+    final sheetTheme = AppTheme.light().bottomSheetTheme;
+    expect(sheetTheme.backgroundColor, Colors.transparent);
+    expect(sheetTheme.modalBackgroundColor, Colors.transparent);
+    expect(sheetTheme.surfaceTintColor, Colors.transparent);
+  });
+
   test('should_expose_page_gradient_and_soft_card_shadow', () {
     expect(AppTheme.pageGradient.colors, [AppColors.surfaceTop, AppColors.ink]);
     expect(AppTheme.cardShadow.color, AppColors.cardShadow);