Fix shuffle high mask

Author: brianpopow

src/ImageSharp/Formats/Webp/Lossless/PredictorEncoder.cs

@@ -55,7 +55,7 @@ internal static unsafe class PredictorEncoder
 
         private static readonly Vector256<byte> CollectColorBlueTransformsShuffleLowMask256 = Vector256.Create(255, 2, 255, 6, 255, 10, 255, 14, 255, 18, 255, 22, 255, 26, 255, 30, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255);
 
-        private static readonly Vector256<byte> CollectColorBlueTransformsShuffleHighMask256 = Vector256.Create(255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 2, 255, 6, 255, 10, 255, 14, 255, 18, 255, 22, 255, 26, 255, 30, 255);
+        private static readonly Vector256<byte> CollectColorBlueTransformsShuffleHighMask256 = Vector256.Create(255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 2, 255, 6, 255, 10, 255, 14, 255, 18, 255, 22, 255, 26, 255, 30);
 
         private static readonly Vector256<byte> CollectColorBlueTransformsGreenBlueMask256 = Vector256.Create(255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0);