Naming a C# field @new cause Godot to generate invalid C# code

[atom-dispencer]

Godot version

4.0-stable-mono

System information

Windows 10, Intel, Visual Studio Community 2022

Issue description

Naming a C# field @new causes Godot to generate invalid C# code. The field can be a class or method member.

This can be seen in these screenshots:

1. (above) - The invalid code. Left: The @new. Right: The invalid C++ code.
2. (below) - The same snippet as above, but renamed @new to a name which Godot can handle.

Steps to reproduce

1. Create a C# script for Godot
2. Open in Visual Studio (untested in VSCode or other editors)
3. Name a field @new. Note that this is valid C# code.
4. Build the .NET project.
5. The build will fail with compilation errors because Godot has generated invalid C# code, trying to name a field new (no @ symbol.

Minimal reproduction project

N/A

[Calinou]

I suppose this occurs with any reserved C# keyword, not just new.

PS: The code on the right is C#, not C++.

[atom-dispencer]

I assume so, but have not checked this.

I've also now changed C++ in the report to C# because yeah you're right it's C#.
For some reason I assumed it was C++ but looking at it now it's fairly obvious that it's C# (I mean the file extension ends with s which is a bit of a giveaway)