fix: allow root-level structure components to be reparented into siblings [ALT-561]

[primeinteger]

Purpose

Ticket: https://contentful.atlassian.net/browse/ALT-561

Changes to Dropzones and Hitboxes to allow root-level structure components to be reparented other structure components on the canvas.

https://github.com/contentful/experience-builder/assets/8539634/57728ee6-3cc7-4198-96a2-98028284eef8

Video demonstrating that dropzones are activating as expected for different scenarios:

• Adding a new structure component
• Adding a new basic component
• Moving a basic component
• Moving a structure component (the bug being fixed)

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
experience-builder-test-app	✅ Ready (Inspect)	Visit Preview	Apr 10, 2024 10:51pm