make pre-screening check more reliable

Author: jf-x-dev

mavis/test/fixtures/helpers.py

@@ -63,6 +63,7 @@ def wrapper(school: School, *programmes: Programme):
 
         LogInPage(page).navigate()
         LogInPage(page).log_in_and_choose_team_if_necessary(nurse, team)
+
         schedule_school_session_if_needed(
             page, school, list(programmes), [year_group], date_offset=7
         )

mavis/test/pages/sessions/sessions_patient_page.py

@@ -218,8 +218,12 @@ def confirm_pre_screening_checks(
             locator = self.pre_screening_listitem.get_by_text(check)
             expect(locator).to_be_visible()
         self.page.wait_for_load_state()
+        expect(self.pre_screening_checkbox).to_be_editable()
         self.pre_screening_checkbox.check()
 
+        self.page.wait_for_load_state()
+        expect(self.pre_screening_checkbox).to_be_checked()
+
     def expect_conflicting_consent_text(self) -> None:
         expect(
             self.page.get_by_text(