Add pause after clicking onto project screen.

tests/tests_tui/tui_base.py

@@ -182,6 +182,7 @@ async def check_and_click_onto_existing_project(self, pilot, project_name):
         Perform general TUI checks during the navigation.
         """
         await pilot.click("#mainwindow_existing_project_button")
+        await pilot.pause()
 
         assert isinstance(pilot.app.screen, ProjectSelectorScreen)
         assert len(pilot.app.screen.project_names) == 1