Fix cross-platform inconsistency in casting double.PositiveInfinity to int

When casting (int)double.PositiveInfinity, Windows returns -2147483648 (Int32.MinValue), while Unix-based systems return 2147483647 (Int32.MaxValue).

This behavior leads to inconsistent results in calculations across platforms. An additional check has been added to standardize the behavior and ensure consistent results regardless of the operating system.

Author: jacob-l

src/OpenSilver.ControlsKit.Controls/StaggeredPanel.cs

@@ -130,7 +130,7 @@ protected override Size MeasureOverride(Size availableSize)
             double availableHeight = availableSize.Height - Padding.Top - Padding.Bottom;
 
             _columnWidth = Math.Min(DesiredColumnWidth, availableWidth);
-            int numColumns = Math.Max(1, (int)Math.Floor(availableWidth / _columnWidth));
+            int numColumns = Math.Max(1, availableWidth == double.PositiveInfinity ? -1 : (int)Math.Floor(availableWidth / _columnWidth));
 
             // adjust for column spacing on all columns expect the first
             double totalWidth = _columnWidth + ((numColumns - 1) * (_columnWidth + ColumnSpacing));