Fix compilation errors in C# 14

[myd7349]

After updating Visual Studio to version 17.13.5, C# 14.0 became available. However, this introduced a compilation issue in the project. As noted in dotnet/runtime#107723, C# 14.0 introduces first-class support for spans. As a result, when calling Reverse on a byte[], the compiler now resolves it to the span-based method void MemoryExtensions.Reverse<T>(this Span<T>) rather than the LINQ version, IEnumerable<T> Enumerable.Reverse<T>(this IEnumerable<T>). This change causes the project to fail to compile in the latest versions of Visual Studio, including 17.13.5 and 17.13.6.

This PR resolves the issue by first calling AsEnumerable to convert the array to an IEnumerable, ensuring that the correct version of Reverse is used. This should fix #140 .

Alternatively, for this project, another fix would be to lower the C# language version by modifying <LangVersion>preview</LangVersion> in WpfHexEditorCore.csproj to a version below C# 14.0.