We added this initially to support storing a press position so that indications (such as Ripple) know where to draw the ripple from. Because this just ends up storing a value for a given interaction in a map, there's little safety / guarantee that there is a position, and it is not flexible for other metadata outside of position.

Additionally, this causes problems when hoisting InteractionState and sharing between components, for example a clickable ListItem that contains a Button:

val interactionState = remember { InteractionState() }
        ListItem(Modifier.clickable(interactionState = interactionState, onClick = {})) {
            Button(
                modifier = Modifier.fillMaxSize().wrapContentSize(align = Alignment.CenterEnd),
                interactionState = interactionState,
                onClick = {}
            ) {
                Text("Button")
            }
        }

Because the press position is stored per-Interaction and not local to the component, the same position will be used to draw both ripples. This causes strange effects as the ripples appear to start from different places, and if you click on the bigger component then the ripple on the smaller component will start from outside the bounds of the component, since the position is just an absolute offset.

A more common use case is a ListItem with a RadioButton - this is less bad as the RadioButton (and other selection controls) use a bounded ripple, so the ripple position never changes - but if clicking on the RadioButton then the ripple for the ListItem will appear in the wrong place.

We should figure out:

a) What the correct / expected behavior is - where the ripple of the other component should begin, and how this can be customized

b) How to change the APIs to support the above