WIP: in-element support

[NullVoxPopuli]

PR made early for easy diff reference

Description

Currently, as reported by https://github.com/emberjs/ember-inspector/issues/1255 and reproduced in https://github.com/NullVoxPopuli/repro-repo-ember-inspector-1255, when components are "portaled" to another part of the DOM, the inspector doesn't know how find them both with the pointer highlight toggle, and the right click menu -> Ember Inspect.

This PR aims to fix that, hopefully meaning that all attempts to inspect a component "work"

Screenshots

TBD

Notes to self for when I pick this up again Test at URL: http://localhost:4201/testing/tests/?filter=Ember%20Debug%20-%20View&testId=64a2ddc4

[RobbieTheWagner]

Looks good so far! Thanks for picking this up.