Fixed the label span issue. (#28851)

Author: NanthiniMahalingam

src/Controls/src/Core/Platform/Android/Extensions/FormattedStringExtensions.cs

@@ -116,7 +116,7 @@ internal static SpannableString ToSpannableStringNewWay(
 				if (font.IsDefault && defaultFont.HasValue)
 					font = defaultFont.Value;
 				if (!font.IsDefault)
-					spannable.SetSpan(new PlatformFontSpan(context ?? AAplication.Context, font.ToTypeface(fontManager), font.AutoScalingEnabled, (float)font.Size), start, end, SpanTypes.InclusiveInclusive);
+					spannable.SetSpan(new PlatformFontSpan(context ?? AAplication.Context, font.ToTypeface(fontManager), font.AutoScalingEnabled, (float)fontManager.GetFontSize(font).Value), start, end, SpanTypes.InclusiveInclusive);
 
 				// TextDecorations
 				var textDecorations = span.IsSet(Span.TextDecorationsProperty)