Fix copied form not added to group if it has no questions

[stephencdaly]

What problem does this pull request solve?

When copying a draft form with no questions, it was not being added to a group. This was because we were trying to create the GroupForm before the copied form had been saved. If the form has no associated questions, it would not have been assigned an ID yet, and the GroupForm creation would silently fail.

Assign the form to the group after it has been saved to fix this.

Things to consider when reviewing

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• 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]

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