[v9] fix(createPortal): ensure container is wrapped in Scene

[CodyJasonBennett]

Fixes #2725.

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[krispya]

I think a better solution is to have scene always point to the root scene, which I think is expected behavior, and then add another prop to the store called container or root that points to the portal root. When not in a portal it would just be the same as scene. This way you always have full access to the tree even if inside of a portal.