ScrollView ignores one axis of center point if animationis disabled

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### Describe the bug

ScrollView ignores one axis of center point when using ZoomTo/ZoomBy if animation is disabled

### Why is this important?

When you try to zoom on click, ScrollView zooms to another point that could frustrate users. It works with animation, but not every zoom requires it.

### Steps to reproduce the bug

1. Create a page containing:
```

```

2. Code behind:
```
ScrollingZoomOptions disableOptions = new(ScrollingAnimationMode.Disabled, ScrollingSnapPointsMode.Ignore);
private void ZoomScrollViewer_DoubleTapped(object sender, DoubleTappedRoutedEventArgs e)
{
var viewportPoint = e.GetPosition(ZoomScrollViewer).ToVector2();
ZoomScrollViewer.ZoomTo(1, viewportPoint, disableOptions);
}
```
3. Zoom out with mouse or touchpad
4. Double click on an image

### Actual behavior

Image is zoomed to point (X,0) or (0,Y), where X,Y - point of click

### Expected behavior

Image is zoomed directly into the point of click

### Screenshots

_No response_

### NuGet package version

2.4.0

### Windows version

Windows 11 (25H2): Build 26200

### Additional context

_No response_

Start by reproducing the issue with the provided ScrollView, ZoomTo call, and disabled ScrollingAnimationMode. Trace the ScrollView ZoomTo/ZoomBy behavior for disabled animation and verify the fix by confirming that both coordinates target the double-click position, then repeat the repro with animation enabled.

Written by the indexing model from the issue text.