tabViewBottomAccessory() support

[hennessyevan]

iOS 26 supports a new modifier called tabViewBottomAccessory that allows you to attach a view that floats above the tab bar and is aware of whether the tab bar is expanded or collapsed via the TabViewBottomAccessoryPlacement environment variable.

I would love to have this api exposed to react-native-bottom-tabs. We could have the placement be available in context of the Tabs

<Tabs tabViewBottomAccessory={MyAccessoryView}>...</Tabs>

function MyAccessoryView() {
  const placement = useTabViewBottomAccessoryPlacement()

  return (
    <View styles={{ backgroundColor: placement === 'inline' ? 'red' : 'green' }} />
  )
}

[yungrari]

Hey @hennessyevan! Any updates on this? Have you found any workaround for how to use the tabViewBottomAccessory now?