Custom module source files are not included in generated Visual Studio project

[jlwitthuhn]

Tested versions

Reproducible in: 4.3.dev6 and latest master as of reporting: bdc0316

Not Reproducible in: 4.2.2

System information

Windows 11, Visual Studio 2022, SCons 4.7.0

Issue description

When configuring/building godot with the below command, source files from custom_modules directories are not included in the generated Visual Studio project.

scons p=windows vsproj=yes custom_modules=../modules

mymodule is still compiled and linked as expected during the build, it just does not appear in the project.

Steps to reproduce

1. Create a minimal custom module directory outside of your godot source directory, the following layout works:

├─ godot
│  └─ <godot repo here>
└─ modules
   └─ mymodule
      ├─ config.py
      ├─ mymodule.cpp
      ├─ register_types.h
      └─ SCsub

config.py:

def can_build(env, platform):
    return True
def configure(env):
    pass

mymodule.cpp: empty

register_types.h:

#pragma once
#include "modules/register_module_types.h"
void initialize_mymodule_module(ModuleInitializationLevel p_level) {}
void uninitialize_mymodule_module(ModuleInitializationLevel p_level) {}

SCsub:

Import('env')
env.add_source_files(env.modules_sources, "./mymodule.cpp")

2. Create the visual studio project by running scons p=windows vsproj=yes custom_modules=../modules
3. Observe that with the latest master mymodule.cpp is not part of the VS project, but with 4.2.2 it is.

Minimal reproduction project (MRP)

N/A