Scene Reactor Loading Refactor

[HexaField]

Summary

🤖 Generated by Copilot at 059b160

Refactored the scene loading system to support multiple scenes and dynamic loading using React components. Moved scene and entity creation logic to Scene.ts file and added state management for loading entities. Removed unused or redundant files and functions related to the old scene loading system. Updated the test file for EntityTree.ts to reflect the changes.

References

closes #8673

Explanation

🤖 Generated by Copilot at 059b160

• Refactor scene loading system to support multiple scenes and use React components for loading entities (link, link, link, link, link, link, link, link, link)
• Implement dynamic loading feature for scene objects based on distance to avatar (link, link, link, link, link, link)
• Remove unused imports and functions from EntityTree.ts and EntityTree.test.ts files (link, link, link, link)
• Delete ChildrenComponent.ts and ParentComponent.ts files as they are no longer needed (link, link)

🤖 Generated by Copilot at 059b160

Sing, O Muse, of the mighty refactor of the scene loading system
That the skilled coder wrought with his swift fingers and keen mind
He removed the initializeSceneEntity function, that ancient relic
And replaced it with a new schema and state, more flexible and dynamic

QA Steps

List any additional steps required to QA the changes of this PR, as well as any supplemental images or videos.

Checklist

• If this PR is still a WIP, convert to a draft
• When this PR is ready, mark it as "Ready for review"
• ensure all checks pass
• Changes have been manually QA'd
• Changes reviewed by at least 2 approved reviewers

[dinomut1]

Scaling colliders in studio is broken in this branch
To reproduce: Opening an empty scene, placing box collider and trying to scale it. Right now it's not updating in real time, and it does update in real time on dev