## Description

This PR fixes a precision error in ~~`ClampingScrollPhysics`~~ `ScrollPosition` that leads to `StretchingOverscrollIndicator` stretching its content unexpectedly in some devices (see  https://github.com/flutter/flutter/issues/126561 where this is visible in `TabBarView` and the test added in this PR where it reproduces with a `PageView`).

~~This PR also contains a change to `nested_scroll_view.dart` because the first change (the one in `ClampingScrollPhysics`)  breaks the precision error test added by https://github.com/flutter/flutter/pull/87801.~~

## Related Issue

Fixes https://github.com/flutter/flutter/issues/126561

## Tests

Adds 1 test.