For models with `supportsNewAspectRatio()`, the picker only stored a
`CommonAspectRatio` in local state for the API request payload — it
never called `onAspectRatioSelect`, so the editor's render-camera
aspect and the Letterbox stayed on the previous setting.
Wrap the picker's callback to also map the chosen `CommonAspectRatio`
to the closest `CameraAspectRatio` and forward it through
`onAspectRatioSelect`. `Auto*` ratios have no fixed shape, so they
leave the letterbox alone.
Tanish Manku
331f9a3c31