1. enable local staging for a site with versioning
2. add a page to the site
3. navigate to the page
4. click on Site Page Variation
5. create new site page variation with name: <script>alert()</script> and set "Copy Pages from Site Pages Variation" to "Main Variation"
variation is created
alert is displayed
Tested on 29ed2c202a6e15934b351b717d0e5f32903fee2a