Embedding Projector: fix camera controls #6286
                
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Motivation for features / changes
OrbitControl in Embedding Projector is not working.
The current code is noop (because of a different Three.js version?)
That means that:
Technical description of changes
Remove all 3D orbitControl code handling since they are noop
Fixes 2D camera panning
Screenshots of UI changes
N/A
Detailed steps to verify changes work correctly (as executed by you)
Alternate designs / implementations considered