React Navigation presentation modal - disable parent screen from scaling down (iOS)

I am trying to make a bottom modal that slides up from bottom, has a transparent background, and can be swiped down (exact same as Instagram's various bottom modals). I can almost achieve this with:

<Stack.Screen
  name="testModal"
  component={ChatAttachments}
  options={{
    headerShown: false,
    headerTransparent: true,
    presentation: "modal",
    cardOverlayEnabled: true,
    gestureDirection: "vertical",
    gestureResponseDistance: 500,
    cardStyle: {
      backgroundColor: "transparent",
      opacity: 1,
    },
  }}
/>

But is there a way to disable the parent screen from scaling down?

Another option could be using presentation: "transparentModal" but that doesn't give me the swipe down ability.