Fix array length Fixes #45632 (#46653)

Fixes #45632

#42775 changed the hash function we used from one that generates a 64-byte hash to one that generates an 8-byte hash. We were only actually using 16 bytes of the hash, but 16 bytes of an 8-byte hash is a source array not long enough error. This upgrades to a 16-byte hash from the same hash family.

Author: Forgind

src/Cli/Microsoft.DotNet.Cli.Utils/Uuid.cs

@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Diagnostics;
 using System.IO.Hashing;
 
 namespace Microsoft.DotNet.Cli.Utils
@@ -27,7 +28,8 @@ public static Guid Create(string name)
             Array.Copy(namespaceBytes, streamToHash, namespaceBytes.Length);
             Array.Copy(nameBytes, 0, streamToHash, namespaceBytes.Length, nameBytes.Length);
 
-            var hashResult = XxHash3.Hash(streamToHash); // This is just used for generating a named pipe so we don't need a cryptographic hash
+            var hashResult = XxHash128.Hash(streamToHash); // This is just used for generating a named pipe so we don't need a cryptographic hash
+            Debug.Assert(hashResult.Length >= 16);
 
             var res = new byte[16];