Supported edge-to-edge (Android)

[grahammendick]

Fixes #839

Changed the height of the NavigationBar when edge-to-edge is enabled to include the top inset. Similarly, the height of the primary TabBar has to include the bottom inset.

In order to work out the top and bottom insets have to listen for onApplyWindowInsets. But doing that from the NavigationBarView or TabNavigationView would remove Android's own listener. So added listeners to SceneView instead, high enough up to ensure the insets weren't consumed.

Resized the native Views after the insets were applied. Because React Native doesn't synchronously resize there's a slight flicker. To limit the flicker to the first scene only, passed the insets to NavigationStack and stored them in React Context. Ensures the NavigationBar is sized correctly on first render for subsequent scenes.

To enable edge-to-edge call enableEdgeToEdge from within the MainActivity

override fun onCreate(savedInstanceState: Bundle?) {
    enableEdgeToEdge();
    super.onCreate(savedInstanceState)
}