fix: use distinct text in SnackBar to avoid duplicate match in integration test

The SnackBar and result_text both contained "Result: Flow completed!",
causing find_by_text to match 2 elements instead of 1 in the CI
integration test.

Author: brunobrown

sdk/python/examples/apps/routing_navigation/pop_views_until.py

@@ -92,7 +92,7 @@ def route_change():
 
     def on_pop_result(e: ft.ViewsPopUntilEvent):
         result_text.value = f"Result: {e.result}"
-        page.show_dialog(ft.SnackBar(ft.Text(f"Result: {e.result}")))
+        page.show_dialog(ft.SnackBar(ft.Text(f"Got result: {e.result}")))
         page.update()
 
     async def view_pop(e: ft.ViewPopEvent):