Add workaround to skip passing icon to electron packager if output platform is win32
Add workaround to skip passing icon to electron packager if output platform is win32

skewedlines/Nativefier,jiahaog/Nativefier,gfpacheco/Nativefier,pixel9/nativefier,pixel9/nativefier,faceair/nativefier-slack,skewedlines/Nativefier,gfpacheco/Nativefier,jiahaog/Nativefier,gfpacheco/Nativefier,zucher/nativefier,faceair/nativefier-slack,jiahaog/Nativefier,pixel9/nativefier,zucher/nativefier,skewedlines/Nativefier,zucher/nativefier