Coordinate Space Refactor + Separate Physics World Per Scene

[HexaField]

Summary

• Pass physicsWorld into all physics functions
• Rename SceneComponent “children” field to “scenes”
• Separate physics world for each auto generated scene component
• Change XR spaces
• Scale scenes rather than camera

Subtasks Checklist

Breaking Changes

References

closes #insert number here

QA Steps

[MichaelEstes]

I can't load into sky-station without falling through the ground, every other location works though so I'm not sure if that's an issue with how it's set up. Also occasionally I can't move the avatar after loading into a location. Everything else looks good

[HexaField]

I can't load into sky-station without falling through the ground, every other location works though so I'm not sure if that's an issue with how it's set up. Also occasionally I can't move the avatar after loading into a location. Everything else looks good

Urgh :(

[HexaField]

I have no idea what's going on. The transforms are all correct, but the rigidbodies themselves seem to be somehow not syncing? No idea how/when this regressed.

[HexaField]

I can't load into sky-station without falling through the ground, every other location works though so I'm not sure if that's an issue with how it's set up. Also occasionally I can't move the avatar after loading into a location. Everything else looks good

Fixed. Came down to use not using the correct reference space in updating collider pose from transforms, and updating transforms from rigidbody ef649bb

[AidanCaruso]

Looks good, tested colliders of multiple scenes loaded together along with webxr.