WIP: deleting drafts journey

[thomasiles]

This is a branch for testing deleting draft forms

Trello card: https://trello.com/c/tP5Fd96d/2610-add-the-ability-to-delete-a-draft-of-a-live-form-with-a-confirmation-page

To test:

• Use the Review app: https://pr-2260.admin.review.forms.service.gov.uk/
• Login as the example user: [email protected]
• Open a live form like those in the "End to end tests" group
• Create a draft from a live form, make some change (drafts aren't created until you actually change the form so just clicking the create draft button isn't enough)
• Use the "Delete draft form" button and confirm
• You should be redirected to the live form page. Create a draft form and check that form matches the live form and doesn't contain any of the changes you made earlier.

Things to consider when reviewing

• Ensure that you consider the wider context.
• Does it work when run on your machine?
• Is it clear what the code is doing?
• Do the commit messages explain why the changes were made?
• Are there all the unit tests needed?
• Do the end to end tests need updating before these changes will pass?
• Has all relevant documentation been updated?

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🎉 A review copy of this PR has been deployed! You can reach it at: https://pr-2260.admin.review.forms.service.gov.uk/

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