Perf : ButtonContentTypeConverter now using InvariantCulture to parse double

Author: jonathanantoine

src/Controls/src/Core/Button/Button.cs

@@ -598,7 +598,7 @@ public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo c
 				int spacingIndex = spacingFirst ? 0 : (parts.Length == 2 ? 1 : -1);
 
 				if (spacingIndex > -1)
-					spacing = double.Parse(parts[spacingIndex]);
+					spacing = double.Parse(parts[spacingIndex], CultureInfo.InvariantCulture);
 
 				if (positionIndex > -1)
 					position = (ButtonContentLayout.ImagePosition)Enum.Parse(typeof(ButtonContentLayout.ImagePosition), parts[positionIndex], true);