All Editor Scenes Generate Cubemap

[FabriceIRANKUNDA]

Summary

while saving scene cubemap will be generated alongside a screenshot
Fixed error when scene preview button clicked without a scene loaded
A summary of changes being made in this PR

Checklist

• Pre-push checks pass npm run check
  • Linter passing via npm run lint
  • Unit & Integration tests passing via npm run test:packages
  • Docker build process passing via npm run build-client
• If this PR is still a WIP, convert to a draft
• When this PR is ready, mark it as "Ready for review"
• Changes have been manually QA'd
• Changes reviewed by at least 2 approved reviewers

References

#4869
References to pertaining issue(s)

QA Steps

1. git checkout pr_branch_name
2. npm install
3. npm run dev-reinit
4. npm run dev

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

Reviewers

Reviewers for this PR
@HexaField

Rendering on the location side is pending

[HexaField]

when i try this, it is not rendering anything to the cubemap file, and the scene becomes invisible. i think we need to be using uploadBakeToServer instead of just prepareSceneForBake as there is more scene handling

[FabriceIRANKUNDA]

when i try this, it is not rendering anything to the cubemap file, and the scene becomes invisible. i think we need to be using uploadBakeToServer instead of just prepareSceneForBake as there is more scene handling

I think the problem was in the upload function where getToken was still used and uploading to the server was failing with a not authenticated error. I have removed getToken you may check again.