fixup! [android] Enable the connect assist experiments on alpha

re private nav host

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

@@ -205,7 +205,7 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity, TorIn
 
     private var inflater: LayoutInflater? = null
 
-    val navHost by lazy {
+    private val navHost by lazy {
         supportFragmentManager.findFragmentById(R.id.container) as NavHostFragment
     }