[fenix] For https://github.com/mozilla-mobile/fenix/issues/24966: Navigate back to previous screen when the last address is deleted.

app/src/main/java/org/mozilla/fenix/settings/address/AddressManagementFragment.kt

@@ -14,6 +14,7 @@ import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import mozilla.components.lib.state.ext.consumeFrom
 import mozilla.components.lib.state.ext.observeAsComposableState
 import org.mozilla.fenix.components.StoreProvider
 import org.mozilla.fenix.ext.components
@@ -66,6 +67,15 @@ class AddressManagementFragment : Fragment() {
         }
     }
 
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        consumeFrom(store) { state ->
+            if (!state.isLoading && state.addresses.isEmpty()) {
+                findNavController().popBackStack()
+                return@consumeFrom
+            }
+        }
+    }
+
     /**
      * Fetches all the addresses from the autofill storage and updates the
      * [AutofillFragmentStore] with the list of addresses.