platformViewBackdrop property
Set true when the bar sits over an iOS PlatformView (e.g. a map). The bar
background renders via live BackdropFilter (the premium shader can't
capture a PlatformView), while the premium indicator refracts the bar's
own icons — so premium animations survive over the PlatformView with no
quality swap. Defaults to false.
Implementation
final bool platformViewBackdrop;