Fix create BitmapDecoder with async file stream.
Fix create BitmapDecoder with async file stream.

[BitmapDecoder.Create does not handle FileStream with FileOptions.Asynchronous · Issue #4355 · dotnet/wpf](https://github.com/dotnet/wpf/issues/4355 )

lindexi/lindexi_gd,lindexi/lindexi_gd,lindexi/lindexi_gd,lindexi/lindexi_gd,lindexi/lindexi_gd