CountBadge
fun CountBadge(count: Int, modifier: Modifier = Modifier, color: Color = MaterialTheme.colorScheme.secondary, maxCount: Int = DEFAULT_MAX_BADGE_COUNT, contentDescription: String? = null)
A pill showing count, capped as "maxCount+" so it stays compact.
Screen readers read contentDescription when given (e.g. "3 variants"); otherwise the visible text.