As a developer, I would like to have the standalone script generator behaviour tested as well as the perspective in the GUI. Acceptance criteria: - [ ] Squish tests that run on the GUI are also run on the standalone script generator - [ ] ~Add test for https://github.com/ISISComputingGroup/IBEX/issues/6478 as it only applies to standalone (the toolbar doesn't appear in the integrated version)~ No longer applies as the toolbar isn't being used for this functionality