Vector128 wrong throw helper call (#101258)

Create<T>(Vector64<T>, Vector64<T>) should use
ThrowHelper.ThrowForUnsupportedIntrinsicsVector128BaseType<T> instead of the Vector256 one.

src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/Vector128.cs

@@ -1041,7 +1041,7 @@ public static Vector128<T> Create<T>(Vector64<T> lower, Vector64<T> upper)
             }
             else
             {
-                ThrowHelper.ThrowForUnsupportedIntrinsicsVector256BaseType<T>();
+                ThrowHelper.ThrowForUnsupportedIntrinsicsVector128BaseType<T>();
                 Unsafe.SkipInit(out Vector128<T> result);
 
                 result.SetLowerUnsafe(lower);