react-navigation隐藏标题阴影边框

对于react-navigation v6，可以使用headerShadowVisible隐藏或显示标题的阴影。

<Stack.Navigator screenOptions={{headerShadowVisible: false}}>
      <Stack.Screen name="Home" component={HomeScreen} />
      <Stack.Screen name="Notifications" component {NotificationsScreen} />
      <Stack.Screen name="Profile" component={ProfileScreen} />
      <Stack.Screen name="Settings" component={SettingsScreen} />
</Stack.Navigator>