3.0版本仍旧无法 通过 GlobalKey 去获取 context

之前有个issue 1367

版本：v1.22.4-hotfixes
child: MaterialApp(
navigatorKey: navigatorKey,
theme: provider.getTheme(),
darkTheme: provider.getTheme(isDarkMode: true),
themeMode: provider.getThemeMode(),
home: AccountUtils.isLogin() ? HomePage() : LoginPage(),
onGenerateRoute: Application.router.generator,
builder: FlutterBoost.init(postPush: _onRoutePushed),
),
无法通过navigatorKey.currentState.overlay.context 获取context，注释掉FlutterBoost.init()正常

本以为高版本已经解决，但是发现3.0版本还是无法通过navigatorKey.currentState.overlay.context 获取context

Start by reproducing the reported MaterialApp configuration with navigatorKey.currentState.overlay.context and FlutterBoost.init(postPush: _onRoutePushed), comparing it with FlutterBoost.init() commented out. Review issue 1367 and determine whether the context lookup should work in version 3.0; done means the expected context is retrievable or the limitation is clearly documented.

Written by the indexing model from the issue text.