引入FlutterBoost后的生命周期

Native->Flutter,
ContainerLifeCycle.Init->ContainerLifeCycle.Appear
Flutter->Flutter
旧的界面：
ContainerLifeCycle.Appear(不会调用，只表示当前状态)->ContainerLifeCycle.Disappear->
新的界面：
ContainerLifeCycle.Init->ContainerLifeCycle.Appear
Flutter->Native
ContainerLifeCycle.Appear(不会调用，只表示当前状态)->ContainerLifeCycle.Disappear->
Flutter->Home->Flutter
ContainerLifeCycle.Disappear->ContainerLifeCycle.Background(Home)->ContainerLifeCycle.Foreground->ContainerLifeCycle.Appear
Flutter->back
ContainerLifeCycle.Appear(不会调用，只表示当前状态)->ContainerLifeCycle.Disappear->ContainerLifeCycle.Destroy