Observe the foldable hinge with `onHingeChange` (iOS 27.1): while it is
partially open and the portrait panel is hidden, the video is fitted to
the upper half of the screen and every control (title bar, center
controls, side sliders, bottom bar) moves to the lower half. Pinch to
fill is disabled in that state. `YATTEE_FORCE_TABLETOP=1` in the launch
environment forces the layout on simulators without a hinge control.
The exterior display has a vertical status bar with a trailing safe
area inset, which squeezed the fullscreen portrait player into the
content width. The video and controls layers now span the full window
width (shifted under the leading inset, like the existing vertical
handling) and the controls pad their edges by the sheet's actual
asymmetric horizontal insets instead of the symmetric max.
Requires the iOS 27.1 SDK (Xcode 27.1).
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