Tapping "Scan a QR code" crashed the app on Android:
com.facebook.react.common.JavascriptException: Error:
CameraFactory.createObjectOutput(...): java.lang.Error:
CameraObjectOutput is not available on Android!
`useObjectOutput` is Apple Vision only — the comment claiming v5 ships a
cross-platform code scanner in core was wrong, and the native factory throws as
soon as the screen mounts. The Barcode Scanner output is the cross-platform one
(MLKit on Android, Vision on iOS); it is attached to the same `<Camera>` via
`outputs`, scans `qr-code` only, and keeps the hand-paste fallback. The scan
callback now takes the barcode values directly instead of the object-output
shape.