Decouple plane viewport camera updates from the 3D Camera controller.

[MichaelBuessemeyer]

Detailed Description

Currently, wk has only one active CameraController at a time that is the TdController. One of this controller's tasks is to update the camera of each viewport once they change. Thus, if the 3D Viewport was not rendered before the fix in #5429 the cameras were not updated and therefore no data was rendered.

To not have a bug like this again, I suggest taking away the task of updating the other viewport's cameras from the TdController and do this task somewhere else so that each viewport is responsible for updating its own camera.

Also see the following: reference.

Context

The suggestion to this change came up in PR #5429.