Add tests for undo/redo

Started scaffolding some stuff

Will need a rebase --onto 0.x once the undo/redo MR is merged

git rebase --onto origin/0.x 45f69ac 3452781-undo-redo-tests

This is blocked on a unit testing strategy to be agreed upon in 🌱 [policy no patch] Set expectations around testing for Frontend Active .

Rebased and pushed some undo/redo tests and test/fix for 🐛 Undo/redo - user can undo the loading of the initial state Active

So … do we want this or do we want vitest from https://git.drupalcode.org/project/experience_builder/-/merge_requests/4...? 🤔 See 🐛 Undo/redo - user can undo the loading of the initial state Active .

Thank you @larowlan for providing both options for the unit tests. I've opted for the Cypress one based on the numerous conversations that have happened over the past few days and because I personally think they are just easier to read.

All the changes in this issue are in this also in 🐛 Undo/redo - user can undo the loading of the initial state Active . For some reason neither @bnjmnm nor I can merge the MR from this issue, the dropdown isn't showing in the UI, so closing this one as duplicate.

Wim Leers → closed merge request !38

Wim Leers → closed merge request !43