Remove app title after user authenticates

app/src/main/java/gq/kirmanak/mealient/ui/auth/AuthenticationFragment.kt

@@ -5,6 +5,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.EditText
+import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.Observer
@@ -53,6 +54,8 @@ class AuthenticationFragment : Fragment() {
         super.onViewCreated(view, savedInstanceState)
         Timber.v("onViewCreated() called with: view = $view, savedInstanceState = $savedInstanceState")
         binding.button.setOnClickListener { onLoginClicked() }
+        (requireActivity() as? AppCompatActivity)?.supportActionBar?.title =
+            getString(R.string.app_name)
     }
 
     private fun navigateToRecipes() {