title: Cant change label title with NavigationComponents
body: <p>I'm trying to change my appbar title that is labeled in my navigation graph within my fragment</p>
  
  <p>I receive a value from arguments as the title of that destination, but I try to change it and I cant</p>
  
  <pre><code> override fun onActivityCreated(savedInstanceState: Bundle?) {
          super.onActivityCreated(savedInstanceState)
  
          Navigation.findNavController(requireActivity(),R.id.nav_host_fragment).addOnDestinationChangedListener { controller, destination, arguments -&gt;
              when(destination.id){
                  R.id.navigation_landing -&gt; {
                      requireActivity().title = category!!.name
                  }
              }
          }
  }
  </code></pre>
  
  <p>I'm not using toolbar, I'm just using the label of the destination , is there anything wrong here ? </p>