fixup! [android] Implement Android-native Connection Assist UI

Bug 43565: The quit button on Android doesn't actually exit

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserToolbarMenuController.kt

@@ -156,6 +156,7 @@ class DefaultBrowserToolbarMenuController(
             }
             is ToolbarMenu.Item.Quit -> {
                 deleteAndQuit(activity, activity.lifecycleScope)
+                activity.shutDown()
             }
             is ToolbarMenu.Item.CustomizeReaderView -> {
                 readerModeController.showControls()

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/home/HomeMenuView.kt

@@ -207,6 +207,7 @@ class HomeMenuView(
                     activity = homeActivity,
                     coroutineScope = homeActivity.lifecycleScope,
                 )
+                homeActivity.shutDown()
             }
             HomeMenu.Item.ReconnectSync -> {
                 navController.nav(