Refactor periodic tasks to use injected scheduler resources

backend/tests/test_tasks/test_geo_cache_flush.py

@@ -140,11 +140,11 @@ class TestRegister:
         _, kwargs = app.state.scheduler.add_job.call_args
         assert kwargs["replace_existing"] is True
 
-    def test_register_passes_app_in_kwargs(self) -> None:
-        """The scheduled job must receive ``app`` as a kwarg for state access."""
+    def test_register_passes_settings_in_kwargs(self) -> None:
+        """The scheduled job must receive settings as a kwarg instead of app."""
         app = _make_app()
 
         register(app)
 
         _, kwargs = app.state.scheduler.add_job.call_args
-        assert kwargs["kwargs"] == {"app": app}
+        assert kwargs["kwargs"] == {"settings": app.state.settings}