autoHideOnModal property
When true (default), destroys the native switch's PlatformView while a
modal sheet is presented above this widget's host route. Prevents the
iOS hybrid-composition z-order bleed (Issue #53) where the host-page
PlatformView's pixels leak through a sheet that also contains a
PlatformView (CN-widget). Requires CNTabBarRouteObserver() to be
registered in the app's navigatorObservers. No effect on non-iOS or
iOS < 26 (Flutter fallback path).
Implementation
final bool autoHideOnModal;