rememberKvadrantPivotState

A pager that never reaches an end.

Windows Phone's pivot pages are cyclical — past the last one comes the first — and the cheapest honest way to get that from HorizontalPager is a very large page count started in the middle, with the index taken modulo the real one. The alternative, a pager that clamps at both ends with the headers pretending otherwise, is the version that feels wrong without anyone being able to say why.